diff --git a/unix/vncviewer/AboutDialog.h b/unix/vncviewer/AboutDialog.h
new file mode 100644
index 0000000..c4f0a7c
--- /dev/null
+++ b/unix/vncviewer/AboutDialog.h
@@ -0,0 +1,42 @@
+/* Copyright (C) 2002-2005 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.
+ */
+//
+// AboutDialog.h
+//
+
+#ifndef __ABOUTDIALOG_H__
+#define __ABOUTDIALOG_H__
+
+#include "TXMsgBox.h"
+#include "parameters.h"
+
+#include <intl/gettext.h>
+#define _(String) gettext (String)
+#define gettext_noop(String) String
+#define N_(String) gettext_noop (String)
+
+extern char buildtime[];
+
+class AboutDialog : public TXMsgBox {
+public:
+  AboutDialog(Display* dpy)
+    : TXMsgBox(dpy, aboutText, MB_OK, _("About VNC Viewer")) {
+  }
+};
+
+#endif