Wireless AP w/ USB WLAN?

[Belmin (Pub)]

I currently have a machine working as my router using Fedora. I have it 
setup perfectly with iptables. I'm looking to add wireless capabilities 
but my PCI slots are full. Anyone been successful using USB? I have no 
idea where to start (ie, what specifications should I look at when 
looking at USB hardware)?

I know with PCI it had to do something with making sure you could set 
the card to master. How does this apply to USB?

If anyone could give me some guidance, it'll be greatly appreciated!

-- 

Belmin Fernandez

Visit: http://www.belminfernandez.com/homepage
Email: belminf at gmail period com