WPA2 is supported as i can connect to WPA2 personal APs. During the connection it flashes that it "connected" for a second then goes to "Validating Identity" which it eventually timesout on.
I am using the Windows Wireless Connection Manager. On a couple of occasions I've seen that particular AP (don't know what firmware) suddenly stop attempting to authnenticate clients (it never sends any RADIUS requests) and power-cycling the AP "fixes" the issue.
Connect it to the inputs of your laptop and run Windows network setup.
As the Airport basically has it's own system it requires this software to setup after which any unit can be connected with the correct passkey if used.
When the user login to the network the username and the password must passed over the network in order to be authenticated by the domain controller. You may be able to find 3rd party software that will enable XP to operate as a web server, but I'd suggest going with Windows or so the functionality is build into the OS.
The best part of this keyboard is the digital frequency it runs on with out interference.
As opposed to deletion and reinstalling, via the device manager, I figured I'd give it a try, updating the Broadcom 802.11b/g WLAN. After typing in the Network Key that is on the ARRIS modem, lo & behold, I got an [endless] Acquiring network address. This will get your mom on the interent and you can piddle around with the wifi access at some later time. Then find the network name, click on it, then click "Properties"Go to the second tab "Authentication"Unclick the box "Enable 802.1x authentication for this network"That should fix your problem You asked "why wireless"?
If the disk is not with it or the software not available then please visit the Apple.
If i remember right, the software was not required. You'll still have to enter your password for your wireless network to get connected.
I thought that at first, perhaps, a virus and/or malware somehow got by and changed/altered the wireless settings, though the antivirus software and Malwarebytes software is up-to-date and is showing no problems. One of these may be doing strange things with the connection. If that does not work it could be a newtork card driver issue. However, before you do that I would advise you to make sure that you have the driver disc for that netcard (or for the notebook if it is an internal Wi Fi netcard), because Windows will often not have built-in drivers for any given netcard.
One way to restore networking, especially wireless, is to go into control panel, system and delete the network card. Since you mentioned that this notebook had previously been setup for multiple wireless profiles, my suggestion would be to delete all existing wireless profiles and see if that allows you to then create a new profile for the Comcast gateway.
I suspect a firmware upgrade probably fixes that behaviour.