alright zzk, calm down it will be alright
one step at a time LOL
alright the "nvidia-glx" is for old old drivers (like the old RIVA cards) so that wont work for you at all
and just one thing, why are you hitting ctrl+alt+f7?
anyway the reason its saying the package doesnt exist is becuase you havent update ubuntu yet (sorry my bad, i didnt think about the fact it was a new install, it updates at first login)
unfourtunatly it is very hard to do all the updates from the command line especially for a new user, now i am very bad at doing remote support (and if i was there mabye i would spot an error in something but idk) but i will tell you what i would do (have done, the older ubuntu gave me all this and more trouble) in this situation, remove your video card, use the onboard card to install (or an old crappy 'video' card) and get ubuntu up and running, do all the updates, and then reinstall your card. after reinstallation you
may get the same screen but then the command
sudo apt-get install nvidia-glx-new
will work fine
i would tell you to download them straight from nvidia's site but installation from there is harder, so i always use ubuntu's precompiled versions
anyway, you can give up if you want, makes no difference to me lol
but youll regret it i assure you
PS in about a month (8-10, dont know the day) ubuntu 8.10 will be coming out, Intrepid Ipex is the name. you could just wait till then to install, it will likely have more support (becuase it will be hardy heron plus all the updates that make installing the driver easy and painless)
EDIT: in case people didnt know ubuntu is named after birds and a major update is done every 6 months period
8.10 release October 2008 - Named [Intrepid Ibex]
8.04 release April 2008 - Named [Hardy Heron]
ect ect