Recommendation for Windows 7 Skin

I have always hated the whole aero design of W7 but have had a hard time finding a well designed skin (LOADS of crap out there). What I want is a nice and simple design, as close to the Pokki style as possible www.pokki.com

Can anyone help me out? Also is there a user friendly way to install skins that doesn't involve hacking registry/installing dodgy software?