I purchased one of these a few days ago. It has to be the most frustrating piece of computer equipment I have ever come across, and that's putting it mildly. In order to get the unit up and running you *must* configure your access point to factory defaults settings (disable WEP, etc). The WRE54G only supports WEP, not WPA. Broadcast SSID must be enabled before you can configure the unit (it can be disabled after initial configuration). I was unable to change the default IP address range of my WRT54G, otherwise the WRE54G would stop working. The setup wizard on the supplied CD does not run on either of my wireless PCs, both have Linksys cards installed, and I have found no trace of any firmware upgrade on the Linksys site for this product.