I have just got a wireless router wotking on Linux (MDK 9.2), I am no expert but I believe wireless lan adapters are sticking point under linux, (like most newer technologies initial drivers are all written by the manufacturers to keep in bed with microsoft) , i specifically bought a netgear MA311 PCI card as they do work in linux. I was amazed how easy the proceedure was in Mandrake. I would say that the instalation was easier than XP (no re-boot). The card was just detected and boob i could surf away.
Anyway I suggest you do some research and find out if your card is supported by linux (yet). try www.linux-wlan.org/