I put this together... It can connect to three wireless networks and run three access points all at once.
WiFi:
2x 200mw Prism 2.5 802.11b cards; one with 2.2dBi omni antenna, one with 5dBi omni antenna
1x 50mw Atheros 802.11g/a card with 7dBi omni antenna
Mainboard:
Soekris net4521
133MHz
64MB RAM
256MB CF
2x 10/100 Ethernet
My boyfriend requests LOLCATing. :P