well, I dont know what kind of card you have or on what interface, but some good general purpose drivers can be found at
www.linux-wlan.org. thats what I use for my USB 802.11b connection, download the latest version (0.2.1 pre9) and it should document the instalation procedure pretty well in the readme, it worked for me!
Just be sure what you have has the prism2 chipset, check their compatability list.