If your WPC11 is v4, then you're not going to find a driver anywhere... I've been looking for one to work with my WPC11 v4, and there is none to be had. There are drivers for v2.7, 3.0 and back, but I was told and researched to find the v4 card has a different chipset/firmware that what these earlier drivers support. I'm changing to a newer linksys card - WPC54G PCMCIA NIC - as another person said worked using Linuxant's DriverLoader. ?? see how it goes!