temporarily disabling GUI login

[Paul Greene]

I've installed VMWare on a Win2K box at home, and Fedora Core 2 in a 
virtual machine. When trying to install VMWare tools into the Linux 
virtual machine, the install script fails because the tools config 
script must be run outside of an X window session.

Doing a CTRL-ALT-backspace to shut down X windows just drops me back 
into another GUI window. I haven't been able to figure out how to 
temporarily disable a GUI login. I'm sure it's fairly easy, but can't 
figure out how to do it.

Help?

PG