Please consider the following as a potential solution:
The chipset on your card is by realtek. I purchased the same card. I went to http://forum1.netgear.com/support/viewtopic.php? t=24061. This dealt with
installing the card in XP with Service Pack 2. I downloaded the driver
mentioned and I am running on Beta 2, a realtek card but I am writing this to
you and sending it over the net. The driver will be a Realtek RTL8169 with
auto negotiation capability