Index: /trunk/src/VBox/Additions/WINNT/Installer/VBoxGuestAdditionsW2KXP.nsh
===================================================================
--- /trunk/src/VBox/Additions/WINNT/Installer/VBoxGuestAdditionsW2KXP.nsh	(revision 34995)
+++ /trunk/src/VBox/Additions/WINNT/Installer/VBoxGuestAdditionsW2KXP.nsh	(revision 34996)
@@ -387,6 +387,5 @@
     ${If} $g_strWinVersion   == '7'
     ${OrIf} $g_strWinVersion == 'Vista'
-    ${OrIf} $g_strWinVersion == 'XP'
-    ${OrIf} $g_strWinVersion == '2003'
+    ${OrIf} $g_strWinVersion == '2003' ; Windows XP 64-bit is a renamed Windows 2003 really
       WriteRegDWORD HKLM "SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\OpenGLDrivers\VBoxOGL" "Version" 2
       WriteRegDWORD HKLM "SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\OpenGLDrivers\VBoxOGL" "DriverVersion" 1