iPhone 3gs 4.2.1 No Service problem after jailbreaking.

[quiksilverib]

i have no clue what the host files would be called or where i could find them

[Mes]

i have no clue what the host files would be called or where i could find them

The file is called hosts. Sorry, but I can't do it for you

[quiksilverib]

i did it but now i cant restore it without getting the 1013 error

[Mes]

I'm not sure how to help you anymore. Since you're an authorized AT&T customer, it is probably best to get it replaced/exchanged. They'll give you a current working 4.3.3 iPhone. And when you get home, Jailbreakme.com will jailbreak. A win win.