More fun for you with XF4.2 & the 2960s:
After starting X, either open a console w/ctrl-alt-F1-6, or simply quit X by ctrl-alt-backspace, or any other method. You computer will still be fully functional, but you will have absolutely no display on either monitor. You can, by typing blind, do startx, halt, reboot, whatever you want-- you just cant have any display. I'm just using one 19" CRT until Nvidia irons this out. :-(
Too tired....no sig.