diff --git a/reactos/include/ddk/compstui.h b/reactos/include/ddk/compstui.h
new file mode 100644
index 00000000000..63612f43b35
--- /dev/null
+++ b/reactos/include/ddk/compstui.h
@@ -0,0 +1,71 @@
+/*
+ * Definitions for Common Property Sheet User Interface
+ *
+ * Copyright 2006 Detlef Riekenberg
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ */
+
+#ifndef _COMPSTUI_
+#define _COMPSTUI_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* DEFINES */
+
+#define PROPSHEETUI_INFO_VERSION    0x0100
+
+#define PSUIINFO_UNICODE    1
+
+/* return-values for CommonPropertySheetUI on success */
+#define CPSUI_CANCEL            0
+#define CPSUI_OK                1
+#define CPSUI_RESTARTWINDOWS    2
+#define CPSUI_REBOOTSYSTEM      3
+
+
+/* TYPES */
+typedef DWORD (CALLBACK *PFNCOMPROPSHEET)(HANDLE, UINT, LPARAM, LPARAM);
+
+typedef struct _PROPSHEETUI_INFO {
+    WORD            cbSize;
+    WORD            Version;
+    WORD            Flags;              /* set PSUIINFO_UNICODE for UNICODE */
+    WORD            Reason;
+    HANDLE          hComPropSheet;
+    PFNCOMPROPSHEET pfnComPropSheet;
+    LPARAM          lParamInit;
+    DWORD           UserData;
+    DWORD           Result;
+ } PROPSHEETUI_INFO, *PPROPSHEETUI_INFO;
+
+typedef LONG  (CALLBACK *PFNPROPSHEETUI)(PROPSHEETUI_INFO, LPARAM);
+
+/* FUNCTIONS */
+LONG WINAPI CommonPropertySheetUIA(HWND, PFNPROPSHEETUI, LPARAM, LPDWORD);
+LONG WINAPI CommonPropertySheetUIW(HWND, PFNPROPSHEETUI, LPARAM, LPDWORD);
+#define CommonPropertySheetUI WINELIB_NAME_AW(CommonPropertySheetUI)
+
+ULONG_PTR WINAPI GetPSTUIUserData(HWND);
+BOOL      WINAPI SetPSTUIUserData(HWND, ULONG_PTR);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif  /* _COMPSTUI_ */