I'm still not sure what can be done if the card has never worked at all under your current installation of XP.

Sometimes a device will still have a workable driver in it after a driver installation fails. This can be retrieved by going to the System control panel => Hardware tab => Device Manager.

There you find the device, open it, and click "roll back driver".

Since you probably wiped everything clean with the reinstallation of XP, this might not work.