[Amphicar]

If so, how do I go about it?

[vict0r]

in theory you could just unlock your phone and take it to them?
dont know if this works for att tho =x

[Falling]

yes, unlock it, then put in an appropriate sim card and follow the instructions here
http://forums.crackberry.com/f135/ho...m-95xx-107154/

[DUKDIKz]

yea,,juz unlock it

[Joseph K]

yes, just follow the steps in that thread. I've used both my s1 and s2 on att as well as thousands of other people lol