Istalled Ubuntu with GUI (GNOME)
Install vmware server 2 (only tested with this)
Create Virtual Machines
Make them start/shutdown automatically when the computer starts/shutdowns through the vmware web console.
Change the default settings in the default run level of Ubuntu (that is runlevel 2) by issuing this commands:

1.) cd /etc/rc2.d

2.) sudo mv S30gdm K70gdm


To get more info why you should do it like
this enter the command "cat /etc/rc2.d/README"

http://nixcraft.com/linux-software/2654-ubuntu-set-default-runlevel-etc-inittab.html
http://ubuntuforums.org/showthread.php?t=790987


Restart, to find yourself in command prompt only.
If you want to start the GUI run the command sudo /etc/init.d/gdm start
When you are in the GUI and want to stop the X server and fall back to command prompt write to a shell the following command:
sudo /etc/init.d/gdm stop

Access your virtual machine remotely with Remote Control Solution