Justin, when I'm in Cydia and I download say the battery theme. I apply it in winterboard and respring it. Then I go back and it doesn't work? How do I get themes to work, other than complete themes?
Just did it! Fuckin awesome!!!!
I used this link thats VERY helpful:
http://www.iphonehacks.com/2010/10/how-to-jailbreak-iphone-4-iphone-3gs-using-limera1n-windows.html