I just swapped routers for my home network from a d-link to one of the wireless linksys routers. It's one where you hold down a button on the outside and it sets up the wireless stuff for you with security stuff :P. Anyways, I did that and it setup WPA and has the key on the site. We have 4 wireless laptops that need to connect to this router. 3 of the 4 connected with no problem. The 4th I've been messing with for a while now.

First I couldn't find any option for WPA, and I noticed the windows update icon in the tray on the taskbar. So I figured WPA may be one of the many updates missing on this computer. Well, we got SP2 and then some installed and still no connection. Then I installed some package that had something to do with WPA, and I thought it was going to solve it, and it seems to be close. Now there is a drop down menu when I go into properties on the network that lets me select between open, wpa and wpa-something. I choose wpa, put in the key, and when I try to connect, it won't connect. I also tried connecting without putting my key in there thinking it would ask me for a key, but it never did. One thing I noticed is that on my laptop if I go into properties on my wireless network connection it has WPA Security Protocol listed in the protols. The machine that won't work doesn't have this, and I thought one of the updates would install it which they didn't. So now I'm lost. What do I need to do to get this machine to have a connection through the new router with WPA?