Same for me! Dosn't work, here is my info!
Im also using Windows 7 Ultimate 64bit RC.
Your computer has a Windows Experience Index base score of 5.1
Your Windows Graphics Experience score is 5.3
Deskscapes appears to be activated on this PC
Deskscapes engine appears to be running
(HP w2207 Wide LCD Monitor) 1 is attached to NVIDIA GeForce 9500 GS
Deskscape.dll 2009/09/25 15:51:27
Deskscapes.dll 2009/09/25 15:51:35
DreamControl32.dll 2009/09/25 15:45:28
DeskscapesConfig.exe 2009/09/25 15:45:49
UI\Deskscape.dll 2009/08/27 13:19:40
UI\DeskscapesVideo.dll 2009/08/25 13:54:54
Activate.exe 2008/04/24 15:01:32
DreamTasks.exe 2009/08/25 13:54:57
DeskscapesVideo.dll 2008/11/22 16:30:44