Hey guys, im new here. I may buy a new MyTouch 3G from ebay that is rooted with Cyanogen 6.0 so its running Android 2.2 and its unlocked. This would be my first Android device ever. If i buy it unlocked and just stick my SIM card in it, will it start working right away, or will i need to change the APN settings? Also, will AT&T automatically charge my account with a data plan? THANKS FOR THE HELP!