If you log out you should go back to the login screen. At this point you can send the key combo "control-alt-backspace" to kill the Xserver, and it will re-start with the new settings.
However, I am not sure if VMWare will trap these keys, so you might find it kills you real, running Xserver!
A safer way is to log out, do a console log in, and from there restart your login manager.
If you are using GDM (which I think is the default in most distros), you can do this as root with the following command:
Code:
/etc/init.d/gdm restart
*edit* I booted my virtual centos to see if the /etc/init.d/gdm thing would work.. looks like not. I don't know which service script re-starts the X-server on redhat-derived distros. You might ask in th redhat specific forum for that.
*another edit*
A quick google found a solution: do these commands in a console:
Code:
init 3
[wait until X closes]
init 5
