How to enable glass view in Windows Vista RC1,
By default Windows Vista RC1 does not enable glass view, to enable it make sure that your VGA driver is installed.
First, I'd Like to thank Ehab el Gindy (Hobzy) he helped me in that
Right click on Desktop->Personalize->Windows Color and Appearance->Open classic appearance properties for more color options then from Color scheme select Windows Aero
I've updated this post for A.Essawy
Essawy this is Windows navigation in Vista if you enable glass view
Happy Vista :D