MN-720 cannot connect to MN-700 Base Station

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

I bought this networking kit last week, and configured the
base station with the provided CD with no problem. Now
here comes the puzzle: my adapter detects excellent
wireless signal from my base station, but cannot connect
to it. It always says the WEP I typed in is invalid, even
when I disabled the encryption feature of the wireless
network. I've tried many security keys, but always got
this same error info. Anybody knows how to fix the
problem? I've already had this kit for almost a week, and
could never really use it. //cry