Hey in this video i show you how to change the background of any iPod Touch for 2G 3G 4G and i'm pretty sure 1G. This is as simple as downloading a package in Cydia. iTouch 2G: Go to Cydia-Packages-Tweaks-homescreen walpaper, download it and goto winterboard check it off than goto gallery and set as background. Thanks for watching
Thanks to ShredShitAllDay for telling me that background activator no longer works.