Help on wireless network and AMD 64 Chip

Hey all,

Recently I upgraded my computer to a asus K8U-X mb and a AMD 64 2800+ cpu. I didnt have any problems with the computer until I installed my D-link wireless PCI card. When I find a connection to the internet using the wireless card I can get onto the internet fine. After a few minutes the card looses its connection to the router and then freezes up the computer. The card is new and the drivers are at the current version. Could the current driver instructions be conflicting with the 64 bit cpu architecture? Or is there another problem that I am missing? The computer hasnt crashed from anything else. Any help would be great and happy new year.