diff --git a/gui/forms/addressbookdialog.ui b/gui/forms/addressbookdialog.ui
index d66962a2..761ea0fb 100644
--- a/gui/forms/addressbookdialog.ui
+++ b/gui/forms/addressbookdialog.ui
@@ -32,6 +32,9 @@
          <property name="selectionBehavior">
           <enum>QAbstractItemView::SelectRows</enum>
          </property>
+         <property name="sortingEnabled">
+          <bool>true</bool>
+         </property>
          <attribute name="verticalHeaderVisible">
           <bool>false</bool>
          </attribute>
@@ -65,6 +68,9 @@
          <property name="selectionBehavior">
           <enum>QAbstractItemView::SelectRows</enum>
          </property>
+         <property name="sortingEnabled">
+          <bool>true</bool>
+         </property>
          <attribute name="verticalHeaderVisible">
           <bool>false</bool>
          </attribute>
diff --git a/gui/include/transactiontablemodel.h b/gui/include/transactiontablemodel.h
index e86ab988..684a9470 100644
--- a/gui/include/transactiontablemodel.h
+++ b/gui/include/transactiontablemodel.h
@@ -4,11 +4,15 @@
 #include <QAbstractTableModel>
 #include <QStringList>
 
+class TransactionTableImpl;
+class TransactionRecord;
+
 class TransactionTableModel : public QAbstractTableModel
 {
     Q_OBJECT
 public:
     explicit TransactionTableModel(QObject *parent = 0);
+    ~TransactionTableModel();
 
     enum {
         Status = 0,
@@ -32,8 +36,16 @@ public:
     QVariant data(const QModelIndex &index, int role) const;
     QVariant headerData(int section, Qt::Orientation orientation, int role) const;
     Qt::ItemFlags flags(const QModelIndex &index) const;
+    QModelIndex index ( int row, int column, const QModelIndex & parent = QModelIndex() ) const;
 private:
     QStringList columns;
+    TransactionTableImpl *impl;
+
+    QVariant formatTxStatus(const TransactionRecord *wtx) const;
+    QVariant formatTxDate(const TransactionRecord *wtx) const;
+    QVariant formatTxDescription(const TransactionRecord *wtx) const;
+    QVariant formatTxDebit(const TransactionRecord *wtx) const;
+    QVariant formatTxCredit(const TransactionRecord *wtx) const;
 };
 
 #endif
diff --git a/gui/src/addresstablemodel.cpp b/gui/src/addresstablemodel.cpp
index 9a72cd97..aec29fa2 100644
--- a/gui/src/addresstablemodel.cpp
+++ b/gui/src/addresstablemodel.cpp
@@ -12,7 +12,13 @@ AddressTableModel::AddressTableModel(QObject *parent) :
 
 int AddressTableModel::rowCount(const QModelIndex &parent) const
 {
-    return 5;
+    Q_UNUSED(parent);
+    int retval = 0;
+    CRITICAL_BLOCK(cs_mapAddressBook)
+    {
+        retval = mapAddressBook.size();
+    }
+    return retval;
 }
 
 int AddressTableModel::columnCount(const QModelIndex &parent) const
diff --git a/gui/src/bitcoingui.cpp b/gui/src/bitcoingui.cpp
index 168dffd7..d8c72ae0 100644
--- a/gui/src/bitcoingui.cpp
+++ b/gui/src/bitcoingui.cpp
@@ -200,6 +200,7 @@ QWidget *BitcoinGUI::createTabs()
         transaction_table->setModel(proxy_model);
         transaction_table->setSelectionBehavior(QAbstractItemView::SelectRows);
         transaction_table->setSelectionMode(QAbstractItemView::ExtendedSelection);
+        transaction_table->setSortingEnabled(true);
         transaction_table->verticalHeader()->hide();
 
         transaction_table->horizontalHeader()->resizeSection(
diff --git a/gui/src/transactiontablemodel.cpp b/gui/src/transactiontablemodel.cpp
index 0f16a3fa..454a10d9 100644
--- a/gui/src/transactiontablemodel.cpp
+++ b/gui/src/transactiontablemodel.cpp
@@ -2,11 +2,122 @@
 #include "main.h"
 
 #include <QLocale>
+#include <QDebug>
+#include <QList>
 
 const QString TransactionTableModel::Sent = "s";
 const QString TransactionTableModel::Received = "r";
 const QString TransactionTableModel::Generated = "g";
 
+/* Separate transaction record format from core.
+ * When the GUI is going to communicate with the core through the network,
+ * we'll need our own internal formats anyway.
+ */
+class TransactionRecord
+{
+public:
+    /* Information that never changes for the life of the transaction
+     */
+    uint256 hash;
+    int64 time;
+    int64 credit;
+    int64 debit;
+    int64 change;
+    int64 lockTime;
+    int64 timeReceived;
+    bool isCoinBase;
+    int blockIndex;
+
+    /* Properties that change based on changes in block chain that come in
+       over the network.
+     */
+    bool confirmed;
+    int depthInMainChain;
+    bool final;
+    int requestCount;
+
+    TransactionRecord(const CWalletTx &tx)
+    {
+        /* Copy immutable properties.
+         */
+        hash = tx.GetHash();
+        time = tx.GetTxTime();
+        credit = tx.GetCredit(true);
+        debit = tx.GetDebit();
+        change = tx.GetChange();
+        isCoinBase = tx.IsCoinBase();
+        lockTime = tx.nLockTime;
+        timeReceived = tx.nTimeReceived;
+
+        /* Find the block the tx is in, store the index
+         */
+        CBlockIndex* pindex = NULL;
+        std::map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(tx.hashBlock);
+        if (mi != mapBlockIndex.end())
+            pindex = (*mi).second;
+        blockIndex = (pindex ? pindex->nHeight : INT_MAX);
+
+        update(tx);
+    }
+
+    void update(const CWalletTx &tx)
+    {
+        confirmed = tx.IsConfirmed();
+        depthInMainChain = tx.GetDepthInMainChain();
+        final = tx.IsFinal();
+        requestCount = tx.GetRequestCount();
+    }
+};
+
+/* Internal implementation */
+class TransactionTableImpl
+{
+public:
+    QList<TransactionRecord> cachedWallet;
+
+    /* Update our model of the wallet */
+    void updateWallet()
+    {
+        QList<int> insertedIndices;
+        QList<int> removedIndices;
+
+        cachedWallet.clear();
+
+        /* Query wallet from core, and compare with our own
+           representation.
+         */
+        CRITICAL_BLOCK(cs_mapWallet)
+        {
+            for(std::map<uint256, CWalletTx>::iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
+            {
+                /* TODO: Make note of new and removed transactions */
+                /* insertedIndices */
+                /* removedIndices */
+                cachedWallet.append(TransactionRecord(it->second));
+            }
+        }
+        /* beginInsertRows(QModelIndex(), first, last) */
+        /* endInsertRows */
+        /* beginRemoveRows(QModelIndex(), first, last) */
+        /* beginEndRows */
+    }
+
+    int size()
+    {
+        return cachedWallet.size();
+    }
+
+    TransactionRecord *index(int idx)
+    {
+        if(idx >= 0 && idx < cachedWallet.size())
+        {
+            return &cachedWallet[idx];
+        } else {
+            return 0;
+        }
+    }
+};
+
 /* Credit and Debit columns are right-aligned as they contain numbers */
 static int column_alignments[] = {
         Qt::AlignLeft|Qt::AlignVCenter,
@@ -18,15 +129,32 @@ static int column_alignments[] = {
     };
 
 TransactionTableModel::TransactionTableModel(QObject *parent):
-        QAbstractTableModel(parent)
+        QAbstractTableModel(parent),
+        impl(new TransactionTableImpl())
 {
     columns << tr("Status") << tr("Date") << tr("Description") << tr("Debit") << tr("Credit");
+
+    impl->updateWallet();
+}
+
+TransactionTableModel::~TransactionTableModel()
+{
+    delete impl;
 }
 
+
 int TransactionTableModel::rowCount(const QModelIndex &parent) const
 {
     Q_UNUSED(parent);
-    return 4;
+    /*
+    int retval = 0;
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        retval = mapWallet.size();
+    }
+    return retval;
+    */
+    return impl->size();
 }
 
 int TransactionTableModel::columnCount(const QModelIndex &parent) const
@@ -35,16 +163,72 @@ int TransactionTableModel::columnCount(const QModelIndex &parent) const
     return columns.length();
 }
 
+QVariant TransactionTableModel::formatTxStatus(const TransactionRecord *wtx) const
+{
+    return QVariant(QString("Test"));
+#if 0
+    // Status
+    if (!wtx.IsFinal())
+    {
+        if (wtx.nLockTime < 500000000)
+            return strprintf(_("Open for %d blocks"), nBestHeight - wtx.nLockTime);
+        else
+            return strprintf(_("Open until %s"), DateTimeStr(wtx.nLockTime).c_str());
+    }
+    else
+    {
+        int nDepth = wtx.GetDepthInMainChain();
+        if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
+            return strprintf(_("%d/offline?"), nDepth);
+        else if (nDepth < 6)
+            return strprintf(_("%d/unconfirmed"), nDepth);
+        else
+            return strprintf(_("%d confirmations"), nDepth);
+    }
+#endif
+}
+
+QVariant TransactionTableModel::formatTxDate(const TransactionRecord *wtx) const
+{
+    return QVariant();
+}
+
+QVariant TransactionTableModel::formatTxDescription(const TransactionRecord *wtx) const
+{
+    return QVariant();
+}
+
+QVariant TransactionTableModel::formatTxDebit(const TransactionRecord *wtx) const
+{
+    return QVariant();
+}
+
+QVariant TransactionTableModel::formatTxCredit(const TransactionRecord *wtx) const
+{
+    return QVariant();
+}
+
 QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
 {
     if(!index.isValid())
         return QVariant();
+    TransactionRecord *rec = static_cast<TransactionRecord*>(index.internalPointer());
 
     if(role == Qt::DisplayRole)
     {
-        /* index.row(), index.column() */
-        /* Return QString */
-        return QLocale::system().toString(index.row());
+        switch(index.column())
+        {
+        case Status:
+            return formatTxStatus(rec);
+        case Date:
+            return formatTxDate(rec);
+        case Description:
+            return formatTxDescription(rec);
+        case Debit:
+            return formatTxDebit(rec);
+        case Credit:
+            return formatTxCredit(rec);
+        }
     } else if (role == Qt::TextAlignmentRole)
     {
         return column_alignments[index.column()];
@@ -82,8 +266,19 @@ QVariant TransactionTableModel::headerData(int section, Qt::Orientation orientat
 
 Qt::ItemFlags TransactionTableModel::flags(const QModelIndex &index) const
 {
-    if (!index.isValid())
-        return Qt::ItemIsEnabled;
-
     return QAbstractTableModel::flags(index);
 }
+
+
+QModelIndex TransactionTableModel::index ( int row, int column, const QModelIndex & parent ) const
+{
+    Q_UNUSED(parent);
+    TransactionRecord *data = impl->index(row);
+    if(data)
+    {
+        return createIndex(row, column, impl->index(row));
+    } else {
+        return QModelIndex();
+    }
+}
+