ipw2200, failed to load firmware

Moin. :) While loading the ipw2200 driver I get the message "unable to load firmware". Do I need the non-oss AddOn.iso to get this driver running or am I missing something else? This is an RC3 install on a Dell 6000 Inspiron. Greetings, Michael -- I love deadlines, especially the sound they make as they go whooshing by.