A hack is available that lets you change Media Center background in Windows 7. It’s not the easiest thing in the world as it involves applying a new registry file and editing permissions. If you want to get even crazier, there’s also a guide available on making new, complete themes for Media Center using a software program called Restorator.

If that sounds too much, you can simply download and install this new Media Center theme called “Homeworld” works on Windows 7 Beta Build 7000 – both x86 and x64 versions.