There are others in this forum that can get one for you. Try this guy, all else fails trade it in, Nextels deal is on until June 30, 2005. Also, there are good sellers on eBay that can get one, but I would try southwestcomm first since he is a forum member.
Originally Posted by southwestcomm
There is no such thing as a Blackberry specific SIM. They use they standard 32K - grey - SIM cards. Email me directly and I can get it fixed for you.