Do you like GUI of Gnome? if yes now you can have it in your windows 7, today our friends proteinpannkaka ported Gnome 3 visual style for windows 7.
This is a really awsome theme same as the real Gnome style and match with Gnome Icons .
You need to copy theme in C:\Windows\Resources\Themes
For using this theme first you need to Patch Uxtheme.