I'm having problems with the user/password assign.

I've tried installing Mandrake 7.1 at least 10 times. When I
get to the user assign mode, I put my name then a password, but after installation is complete, my 'user' is rejected
as wrong. Also the password cursor doesn't move when I type in the password.

I then tried NOT assigning a user & password, but I had the same problems. So, I can't run Linux because of this Root user or whatever it is problem.

Your thoughts & help please!

Strange behaviour!

You might try the following:
boot the PC and at the LILO-prompt type "linux 1" (maybe "linux single" will also work).

The system should come up now to the single-user mode where you have full root-privileges without giving a password (a security-hole if you don't change it).
Here you could try to give root a password with the "passwd" command. Just type "passwd" and the shell should ask you for the new root-password.

good luck