diff --git a/rfb_win32/Dialog.h b/rfb_win32/Dialog.h
new file mode 100644
index 0000000..d46133a
--- /dev/null
+++ b/rfb_win32/Dialog.h
@@ -0,0 +1,159 @@
+/* Copyright (C) 2002-2003 RealVNC Ltd.  All Rights Reserved.
+ *    
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+// -=- RegConfig.h
+
+// Class which monitors the registry and reads in the registry settings
+// whenever they change, or are added or removed.
+
+#ifndef __RFB_WIN32_DIALOG_H__
+#define __RFB_WIN32_DIALOG_H__
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <prsht.h>
+#include <list>
+#include <rfb_win32/TCharArray.h>
+
+namespace rfb {
+
+  namespace win32 {
+
+    // Dialog - A simple Win32 Dialog box.  A derived class of Dialog overrides the
+    // initDialog(), command() and ok() methods to take appropriate action.  A
+    // simple dialog box can be displayed by creating a Dialog object and calling
+    // show().
+
+    class Dialog {
+    public:
+
+      Dialog(HINSTANCE inst);
+      virtual ~Dialog();
+
+      // showDialog() displays the dialog box.  It returns when it has been dismissed,
+      // returning true if "OK" was pressed, false otherwise.  The resource
+      // argument identifies the dialog resource (often a MAKEINTRESOURCE macro
+      // expansion), and owner is an optional window handle - the corresponding
+      // window is disabled while the dialog box is displayed.
+
+      bool showDialog(const TCHAR* resource, HWND owner=0);
+
+      // initDialog() is called upon receipt of the WM_INITDIALOG message.
+
+      virtual void initDialog() {}
+
+      // onCommand() is called upon receipt of a WM_COMMAND message item other than IDOK
+      // or IDCANCEL.  It should return true if the command has been handled.
+
+      virtual bool onCommand(int item, int cmd) { return false; }
+
+      // onHelp() is called upon receipt of a WM_MENU message.  This indicates that
+      // context-specific help should be displayed, for a dialog control, for example.
+      // It should return true if the command has been handled.
+
+      virtual bool onHelp(int item) { return false; }
+
+      // onOk() is called when the OK button is pressed.  The hwnd argument is the
+      // dialog box's window handle.
+
+      virtual bool onOk() { return true; }
+
+      // Read the states of items
+      bool isItemChecked(int id);
+      int getItemInt(int id);
+      TCHAR* getItemString(int id); // Recipient owns string storage
+      
+      // Set the states of items
+      void setItemChecked(int id, bool state);
+      void setItemInt(int id, int value);
+      void setItemString(int id, const TCHAR* s);
+
+      // enableItem is used to grey out an item, making it inaccessible, or to
+      // re-enable it.
+      void enableItem(int id, bool state);
+
+    protected:
+      static BOOL CALLBACK staticDialogProc(HWND hwnd, UINT msg,
+			      WPARAM wParam, LPARAM lParam);
+      virtual BOOL dialogProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
+      HINSTANCE inst;
+      HWND handle;
+      bool alreadyShowing;
+    };
+
+    // PropertySheetPage 
+    // Class used to define property pages within a PropertySheet.
+    // Each page is associated with a particular dialog resource, indicated by
+    // the "id" parameter supplied to the constructor.
+
+    class PropSheetPage;
+
+    class PropSheet {
+    public:
+      PropSheet(HINSTANCE inst, const TCHAR* title, std::list<PropSheetPage*> pages, HICON icon=0);
+      virtual ~PropSheet();
+
+      // Display the PropertySheet
+      bool showPropSheet(HWND owner, bool showApply = false, bool showCtxtHelp = false, bool capture=false);
+      
+      // Calls initDialog again for each page that has already had it called.
+      // Note: If a page hasn't been seen yet, it won't have been called.
+      // Note: This must only be called while the property sheet is visible.
+      void reInitPages();
+
+      // Calls onOk for each page that has had initDialog called, and returns
+      // false if any one of them returns false, or true otherwise.  ALL the
+      // onOk() methods will be called, even if one of them fails.
+      // Note: If a page hasn't been seen yet, it won't have been called.
+      // Note: This must only be called while the property sheet is visible.
+      bool commitPages();
+
+      friend class PropSheetPage;
+
+    protected:
+      HWND owner;
+      HICON icon;
+      std::list<PropSheetPage*> pages;
+      HINSTANCE inst;
+      TCharArray title;
+      HWND handle;
+      bool alreadyShowing;
+    };
+
+    class PropSheetPage : public Dialog {
+    public:
+      PropSheetPage(HINSTANCE inst, const TCHAR* id);
+      virtual ~PropSheetPage();
+
+      void setChanged(bool changed);
+
+      friend class PropSheet;
+
+    protected:
+      void setPropSheet(PropSheet* ps) {propSheet = ps;};
+      static BOOL CALLBACK staticPageProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
+      virtual BOOL dialogProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
+      PROPSHEETPAGE page;
+      PropSheet* propSheet;
+    };
+
+  };
+
+};
+
+#endif // __RFB_WIN32_DIALOG_H__