I found a Windows 7 theme called “Maverick for Win7” designed to look like the Ubuntu Ambiance theme on deviantart.com. The themes simulates the Ubuntu 10.10 Maverick desktop for Windows 7.
It comes with a set of icons,cursors and the default wallpaper. You can install the theme by downloading it from HERE. You can also install Gnome Panel for Rainmeter from HERE.
Visit THE PAGE for more details and installation instructions.