I have an unlocked sidekick ID because I broke my other phone.. So now I have to use this. my current 'network APN' is set to: hiptop.t-mobile.com what do I change that too for AT&T,

& Also, when you first get your sidekick ID it says that there will be a screen that will have me enter my name and password for the phone.. but it never popped up or anything so when i go to my settings it says: 'username: not available' (in my system info) and 'service: not signed in' (in my network status)
i need help, why does it say that?
How do i change it?
it wont let me access the internet even though i have unlimited web..
i think it s because my 'service' and that it isn't synced with t-mobile or whatever.


I NEED HELPP!!