I have a Linksys BEFW11S4 Wireless-B router. When I installed it, I used
128-bit WEP compression on it and saved a passphrase.

My laptop's OS crashed a couple of weeks ago and I figured it was a good
time to upgrade to Windows XP.

I can see my router from the 'Available Wireless Networks' window. However,
(correctly) according to windows the router is WEP-encrypted. But for some
reason, when I enter my passphrase, I get a Windows message saying that it
has to be a 40-bit or 128-bit key and can only be a certain number of ascii
characters.

Any ideas?

Thanks in advance.
Schiz