...so I stand multiply corrected.
I believe you if you say starcraft supports TCP/IP, I just know that the in-game create LAN game menu says that it needs to be set to IPX. So that's all I know how to do. I'll check that maybe on a starcraft forum or something.
did you try an empty password?
Or did someone else set a password?
I'm pretty sure I did try that, but I'll make sure later...
I know nobody else has messed with it, because I'm the only user, and there's no internet connection for someone to hack.