Try downloading and installing the WPA2 update for XP. If it still doesn't work, I suspect your XP wireless NIC doesn't support wpa2. You may have to buy a new one. Jerry

Check out this wireless adapter configuration in Windows XP article, probably could help you solving the problem. Hope this helps.

I have 3 laptops, 2 with win 7 premium and 1 with xp home edition, the win 7's will connect to the internet fine...but the xp won't connect at all, now if I turn off the security xp will connect fine, can anyone tell me what my problem is please? Thank you Kindly for any help