Wireless LAN for gaming

[underworld288]

On one computer i have a Airnet AWD108 32bit PCI 802.11g 108Mbps Wireless Card and on the other i have a LINKSYS WUSB54G USB 1.1/2.0 Wireless Adapter, and for the Airnet wireless card i have the software installed but it won't regonize that the card is acually in the PCI slot in the PC. I need this LAN up so i can play CSS when some friends come over so any help would be nice.

thanks