Connect to server--stuck bad password

[David Sternlight]

I used Panther's "Connect to server" to try to connect to a Windows 
machine by entering the IP address on the local network into the server 
address window. When the userid and password screen came up, I 
inadvertently entered an invalid password. Now, every time I go to 
Connect to Server and type in that IP address (a local IP) in the 
server address window, the connection automatically uses the bad 
userid/password and I get a "Connecting to Server" popup which says 
"Connecting to afp://192.168.mumble.mumble"  and then "Could not 
connect to the server because the name or password is not correct." The 
only choices are "try again" and "cancel" and neither gives me a chance 
to change the password.

I can't find an entry for the IP address in my keychain, or any other 
way to enter a different userid and password. Deleting the IP address 
from the favorite servers list  in the Connect to servers window 
doesn't help.

Anyone know how to change the password once it's been saved in some 
mysterious place by Panther?