D-Link DWL-G520 AirPlus Xtreme G - Wireless PCI Adapter - 802.11g - 108Mbps $34.74

The D-Link AirPlus Xtreme G DWL-G520 Wireless PCI Adapter for desktops features Super G technology to deliver data transfer rates up to 108Mbps in the 2.4GHz frequency. The DWL-G520 works with 802.11g and 802.11b standard wireless devices and when used with other Super G products delivers throughput speeds capable of handling heavy data payloads including real-time MPEG video streaming. Plus, the DWL-G520 also includes a configuration utility to discover available wireless networks and create and save detailed connectivity profiles for those networks most often accessed.

Buy.com is carrying this Wireless PCI Adapter for $34.74