This card is identical to the one in my home server at the moment. I use the wireless segment from my laptop. This card is an Intersil Prism chipset and works fine with the HostAP driver in linux, meaning you don't need an access point.
00:0b.0 CardBus bridge: Ricoh Co Ltd RL5c475 (rev 80)
eth0 Link encap:Ethernet HWaddr 00:50:DA:68:60:04 inet addr:10.28.1.1 Bcast:10.28.255.255 Mask:255.255.0.0 eth1 Link encap:Ethernet HWaddr 00:01:03:40:65:87 inet addr:202.0.42.116 Bcast:202.0.42.255 Mask:255.255.255.0 wlan0 Link encap:Ethernet HWaddr 00:05:5D:D9:94:9C inet addr:192.168.1.1 Bcast:192.168.255.255 Mask:255.255.0.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:999770 errors:0 dropped:0 overruns:0 frame:0 TX packets:1347243 errors:369 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:79890952 (76.1 MiB) TX bytes:1421867786 (1.3 GiB) Interrupt:11 Base address:0x100