Sorry to hear you are having install problems Mr545mk, that can be very frustrating. I have installed Mandrake 9.2 serveral times and it always asks me to set the root password and gives the opportunity to setup a normal user as well.
Since you have the same experience each time, I would try the following:
when you get the login prompt, type the word root and if it asks for a password, just hit the enter key. If it logs you in, you can start an X windows session by typing startx . Let me know what happens....