It shouldn't be made by macrovision as they design the copy protection in it, not the card itself.
However what design on it and does your manual have any names like msi, leadtek, gigabyte, pny, asylum?
It should, that would help you find more info about the card.
As for drivers if that is what you want, go to nvidia and download them:
http://www.nvidia.com/object/winxp_2k_53.03
You should have your computer running in no time at all with their drivers at the site.