Ubuntu not turning on

Hi, I'm running Ubuntu 10.10 on what used to be a windows vista. I bought me a new graphics card today so that I could run dual screen (GeForce210). I saw a guide at http://ubuntuguide.net/how-to-install-nvidia-graphics-driver-in-ubuntu-10-10-maverick-meerkat and I followed it.

I typed: sudo apt-get install nvidia-current

then I restarted my computer, once again as instructed I typed:

sudo nvidia-xconfig

then logged out as instructed...

After I logged out the screen went black and i was not able to log in. So I restarted my computer. Now when I turn on my computer I am getting this error and it's stopping at it.
*********************************************************************************************************
fsck from util-linux-n/g 2.17.2
/dev/sda1: clean, 255658/294092280 files, 5031534/117616640 blocks
*starting apparmor profiles
Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox

*setting sensors limits
Starting GNUstep distributed object mapper: start-stop-daemon: unable to stat /usr/bin/gdomap/ (no such file or directory)
speech-dispatcher disabled: edit /etc/default/speech-dispatcher
*starting the winbind daemon winbind
*********************************************************************************************************

It stops on this screen. I have a lot of school work and projects that are due very soon on my computer, I do not want to wipe it but I cannot get it started. If some one knows anything I could do to get past this I would very much appreciate it.

I do have an external hard drive and at the moment I am using my Ubuntu disc to "try Ubuntu" I was going to try backing up everything I have but it will not let me access root because i am not logged on to that user, is there anything I can do to get pass this? Any help would be very much appreciated i cannot lose all this work. I've called around and no one is willing to work on my computer since it is now running on Ubuntu 10.10