so my roomates and I bought a netgear 108 mbps wireless router, came home and set it up. My computer (macbook) connects fine with no problems, but neither of my roommates (who have fairly new pc laptops) can connect wirelessly at all. We've tried WPA, WEP, and no security and they cannot connect in any way. I've changed the broadcast channel and swtiched from "g and b" to "108 mbps" and back to no avail.

The only thing I can really think of is maybe their antivirus software is blocking the router, but I don't really know how to fix that. Anyone have this problem before?