Recently I found a way to stop gnome from starting when your pc starts. (thankyou Glider!!)
Remove Gnome Auto Start:
1) Crtl+Alt+F1 (drops you to a prompt - F7 to return to the wm)
2) sudo /etc/init.d/gdm stop
3) update-rc.d -f gdm remove
To manually start Gnome:
sudo /etc/init.d/gdm start
Thats that.. I used this trick to help save on resources for my server since it is headless.