I'm following the guide at http://forums.linuxmint.com/viewtopic.php?f=59&t=117643
in a seemingly vain 5-hour attempt to get nvidia drivers on LMDE. I'm completely lost at the point I'm told to go to the CLI by pressing ctrl+alt+f1, that just gives me a black screen with a blinking line in the top left. The same go for f2-8. It won't let me start the install without closing the "X Window" and trying to shut down mdm will give the black screen/blinking line again, this time with no way out but a restart.