Well, if you already have BB internet service, my guess would be that your already supported.
The way an online game works is this: You load the game, and say you want to play, then the game looks for the modem/Na and the rest is in the modem/Na\'s hands.
The Modem/Na get\'s into "cyberspace" through your ISP, and get\'s routed directly to the games servers.
So if you have a working ISP I don\'t see how you couldn\'t use PS2 online....
Don\'t worry about ISP\'s, I have a very local and obscure ISP and it all works fine.