The powerful GA511 Gigabit PC Card is equipped with 10/100/1000 Mbps auto-sensing capability eliminating the need for manual switching. NETGEAR’s Smart Wizard Install Assistant ensures a fast, easy five-click installation, and its unique Smart Wizard Performance Dashboard allows the user to monitor the actual data transfer speed. The GA511 is fully backward compatible with 10 Mbps and 100 Mbps Ethernet products and supports Windows XP, 2000, ME, 98SE, and NDIS 2.0.
http://www.netgear.com/pressroom/pre...ail.php?id=202

this is totally badass, and its at a decently affordable price, like 60$ or something..