Trying to have secure laptop connection to Belkin router

[Vito]

I have a Sager 4760 laptop with a WNC 802.11b wireless adapter built in. The adapter will only do WEP and I cant upgrade the firmware to WPA.
My Belkin router is 802.11g.
I'm trying to get a secure connection to my router but the Sager wireless is having trouble connecting when I set the secure mode on the router to 128bitWEP.
The only way I can get lappy connected is to leave the router's security setting at disabled.

[I.M.O.G.]

Update your WLAN drivers from here:
http://www.sagernotebook.com/ftp/misc/wlan_4060.exe

Maybe these MSKBs can help:
http://support.microsoft.com/kb/821442/en-us
http://support.microsoft.com/kb/827705/en-us

Are you on XP or 2K?