modem proplem with NWN

[natho]

Hi, I have been playing NWN online for a while now and have had no problems with the game or any connection problems. But recently i got a new Modem and installed it. Whilst This modem works perfectly with other online games, for some reason every time i try to connect to a online NWN game it disconnects me from the server and from the internet. I know it might be a problem with the modem itself and have tried to contact Netcom( modem type: NETCOMM AM5060 Rave 56 USB) about the problem, they haven't replied yet. I was just wondering if anyone else has come across this problem. Any help with be greatly appreciated.

thanks