Put it back on for the time being and start X. If you get the logo when you start X, that's a good indication that everything is working fine. If you don't get the logo, then you screwed something up.
Of course, if you get the logo, you can go ahead and disable it again.
"Floating in a dream-like state, I am the emporer of a parallel universe." --Arch Enemy
My xorg.conf file