Big table of wireless cards, and their chipsets. Valuable for figuring out if a prospective card will work with HostAP 
http://www.linux-wlan.org/docs/wlan_adapters.html.gz
Why do you want an Intersil Prism chipset? For HostAP mode http://www.personaltelco.net/index.cgi/HostApMode
so your server can be a wireless access point without the cost of a wireless access point.
