Ubuntu Networking :: Windows Computer Just Stole Wifi Network?

A friend came by, and we tried to log her on to our wifi network when she was having trouble accessing it with her Windows (Dist #) machine.he wifi network itself was set up with macs, and had standard, open settings as far as I could tell - no password, NETGEAR title of the network.The Windows computer prompted us for a Security Pin, which we gave it from the router, and then all of the computers already on the network got dropped, while the Windows machine got set up onto the wifi, renamed the network with its own username, and automatically set up a password.I'm currently on the network using LAN, but can't figure out how to set up the network through Ubuntu back to the original settings for the rest of the people that need to access the network.Specs:I'm running Ubuntu 11.0,The Windows machine is unknown right now. I'll repost if that will help.The wifi router is a Netgear Wireless N 150 WSR 1000, with the serial, mac, and security pin numbers.