WindowBlinds
Well, till now, i have told you almost everything that’s required to turn your XP into Vista. The only thing that remains is ‘The Theme’. Now if you aren’t really interested in the transparency thing, then a theme file that works with StyleXP would work just fine. But, if you actually want your system to have a transparent kinda interface, the go for Stardock’s WindowBlinds. This software allows you to transform almost everything that can be transformed 
. Plus, you can apply other themes like that of Mac,Tiger,Leopard,etc. Just to show you how the user interface would look like using this software,here’s a cropped snapshot of my desktop
PS: It doesn’t alter any system files,which makes it perfectly safe to use.
Posted by Rajat Jaswal