@d3ad i think sn0wbreeze is not able to hactivate A5(i,e iPad2 and iPhone 4S)and A5X(i,e iPad 3).
Visit ih8sn0w.com it is posted on their website.
@Rani You could try
this although i still don't believe in imei unlocking thingy. It won't hurt.
Just select your country (sweden), and operator (telia), enter your imei. And see the price, i could not see the price though i haven't got a 4S.