I don't currently have a wireless setup but here are some links that
might be helpful:

There's a local wireless users group:
http://www.tcwug.org/

IBM's Developerworks just had an article on setting up wireless for
Linux.  You have to register to view it but it's a good article.
http://www-106.ibm.com/developerworks/education/r-wilinux.html?n-wi-9122

MPC sells PCI cards that accept PCMCIA cards for about $20; with one of
these a a couple PCMCIA wireless cards should work.
http://www.materialsprocessing.com/sspage.htm

Personally, I just have lovely blue CAT5 strung all over my old house.

rpgoldman at real-time.com wrote:
> Can anyone suggest what would be the best WAP + wireless PCI cards for
> me to buy for a linux system?  More specifically for a network of about
> 5 boxen, mostly linux but with one or two windowses [we hates it, my
> precious].

-- 
-scot