You have to give me the model number, then I can help you. If there is no native Linux driver, you need to use ndiswrapper.
Regards, Ivan
Yep, NDIS Wrapper works just fine. I have a Linksys 54G card I used before switching to Linux, and the Broadcom chip hasn't been supported in the kernel.
The problem I've had is in updating the kernel, I have to reinstall the NDIS wrapper modules after doing so.