Wanted: Cheap, Linux compatible wireless card

My son is finally learning to read, and it is time to put a computer in his room. Unfortunately, we live in a hundred-year old house, and the idea of threading several feet of cat5 through bedroom and hallway is not appealing. I am putting Edubuntu on it for him. Does anyone have suggestions for a cheap, Linux compatible wireless card? I prefer an A/B/G card that is WPA compatible. I prefer a USB device if possible, but I won't quibble if PCI is cheaper. I really don't want to deal with ndiswrapper. Any suggestions? Matt Copple mcopple@kcopensource.org