Generic Linux Wireless Card

Does anyone know whether common so-called “generic” PCI WiFi cards work under Linux? pricewatch, the Internet’s best competitive marketplace for technology (often beats eBay), lists 802.11b PCI cards as cheap as $16. I’ve tried contacting the vendors of these “generic” cards but haven’t been able to get anyone to tell me the chipset or whether or not the card will be useable under Linux. Can any of my readers give me a tip?