Getting a Netgear WG11154 MBPS Wireless USB 2.0 to work with a Linksys WRT54GS

The Linksys WRT54GS is currently working with my main PC [Windows XP x64 edition] connected by ethernet and 2 notebooks [both Windows XP] with no problems.
I am trying to get my standby PC [Windows 200] and the Netgear WG111 to work with the network with so far no success.
The Local Area Connection Status shows,
Status: Connected
Duration: keeps ticking over OK
Speed: 54.0 Mbps
Driver version is 5.1213.6.327 date 27/03/2006
Device status: Working properly.
Components using the connection: Client for Microsoft Networks, QOS Packet Schedular, File & Printer Sharing for Microsoft Networks, AEGIS Protocol v3.4.5.0, Internet Protocol [TCP.IP]

The Netgear Wireless Assistant;
Shows my correct SSID, has selected WEP, and my correct key for key 1 entered manually, Network type has selected Access Point
The blue section has the correct network name, the correct channel number, 54 Mbps and the signal strength shows 5 of the 8 "lights" as yellow. Should there be numbers where there are 4 yellow dashes?

However Internet Explorer does not connect to any web site.


Any suggestions please as to what I need to be checking?