Are you receiving an endless "Validating Identity" connection status when trying to connect to a wireless network.
In a few simple steps you can bypass Windows Validation, and the resulting "Limited or No Connectivity" issue on an encrypted connection.
) it can't be created a second time, ISPs don't support that. There should be only "Local Area Connection" there (and/or possibly "Wireless Network Connection"). (copy in a command prompt, just highlight the text with a mouse drag and press enter). Did you run the networking wizard once you reformated and reinstalled the OS. After all of this is done then connect using the wireless connection.
Is the network setup for just auto IP configuration. Oh and make sure that the mac address of the wireless card on the xp machine has not been excluded in a mac address filter in the router.
In the next window click on the "Authentication" tab, Make sure "Enable IEEE 802.1x...." checkbox is UN-Checked, the rest of this window should be greyed out.
If your network is Encrypted go on to step 6 otherwise Click ok and try to connect to your network again.
Note: I updated the wireless adapter driver now untick "Enable IEEE 802.1x authentication for this network" and click Ok. If this fails to resolve your issue, remove your network from the Prefered Networks list and then just use the Wireless Network Setup Wizard found in Control Panel to create your wireless network.