here is my situation:

i have a client with two computers connected wirelessly to a 802.11B linksys wireless router.

they upgraded one computer from 2000 to XP and now the wireless connection (its a linksys wusb11 ver 2.6) won't connect. gets the "this connection has limited or no connectivity" and on the explanation says "unable to obtain an ip address". this is when i am not broadcasting the SSID and have WEP on.

The other computer, running XP (NOT with xp2) has no issues.

If I broadcast the SSID and turn WEP off, it connects just fine.

I've read a number of possible fixes but wondering if anyone here knows specifically what is going on and how to fix it.....I have to secure this network soon. I have left them open just so they can work but it can't be left that way.