I have a laptop connected wirelessly to a network of three computers. It has windows xp, and McAfee firewalls, both of which I've created exceptions for. I tried changing the IP properties for the connection according to the link on this thread. I have tried playing both versions 1.23 and 1.23+ online, and I still always end up pinging if I try to host and having the connection break after a short time.

Any suggestions as to what else I might try?