[Scgeeks] Need recomendations for a wifi adaptor for a desk top computer.

[Frog Prince]

My grand kids just moved in to a new place.  They have cable and cable 
internet with wifi.  I can't run a CAT5 cable to the game room. (Attic is 
too small and much too hot)

I need a recommendation (and source) for a wifi adaptor to connect to the 
grand kids computer so I don't need a cable.  Box is XP home.

Distance is 50 to 100 ft (max) so a USB would work as well as a internal 
card or a stand alone adaptor.

TIA

FP