Saving Passwords

I had a user ID and password saved for a favorite site. I needed to 
change the password so I used the "Password Manager" to delete the saved 
info. Now I can't save the new password because Mozilla won't ask me if 
I want to save it and I don't know of any way to do it manually. I know 
that some sites block automated password operations, but it worked 
before for this site. I'm using Mozilla 1.2.1 with OS9.2 -- Fred