I know about the su command in terminal, but there are times when I want access permission to everything in X Window too (like trying to mount multiple CD Drives).
when I logout there is only one user (me) to choose from to log back in

You don't need to log into X server as root to do anything. You can change the settings to allow you to log into X as root, though. Someone else will have to explain how; I'm not familiar with how to configure a graphical login.

One thing you can do is open up a terminal in X and then su. Then start the program from that terminal; e.g. to start kwrite as root enter "kwrite &" in the terminal.

If you're really in a bind and need to log in as root right now, just su, then enter "init 3". This will send you to a text login. Then login as root and type "startx." This will start the X server as root.

thanks, that should work (assuming it works).

having trouble with my CD Drives.

The default DM in mdk9.1 is called mdKdm or something like that and it controls the way your login screen looks and the options available. I've always found it to be pretty buggy and I don't like the way it looks. It's a variant on kdm which is the standard DM for kde. Also, mdKdm does not allow you to log in as root in graphical mode as a security measure. You can change your DM to kdm in mandrake control center>Hardware>Display Manager. Change it to kdm and the next time you log in you will be able to type in anything you want in the user name field, including root.

perfect! Thanks