I have a 64K 3G Cingular go-phone sim card...I was wondering if it will work

with the AT&T Blackjack 2? I have a 64k 3G Cingular Go-phone simcard...And I was just wondering if it will work in the AT&T Samsung Blackjack 2...I am already using it in my other newer phone, which is the Sony Ericsson W580i...I am just wanting to know if I will be able to use my sim card in the blackjack 2