Go to system, Administration, Hardware drivers. It will download and install
proprietary ATI driver if one is available. If not, install EnvyNG from the
repositories and it will build a driver for you from ATI.

You might check out this link also:
wiki.cchtml.com/.../Ubuntu_Jaunty_Installation_Guide

I got my card to work finally but right now Im not at all happy with it
all. My screen resolution through correct vertically, will not fit
horizontally. I cant for the life of me get the refresh rate to set on
the right one. Right now Im on the middle setting on desktop features,
when I have say email up (thunderbird) the app is up above the screen
area. I have to keep pulling it back down into the viewable screen. No
clue what is causing that. I turned off all desktop features and now
things are back to normal... well kinda.

My top menu bar is now fracked! The buttons are all out of place and
several I found are NOT movable -- like networking and google desktop.

You can get your drivers to work but, at what cost?

Hey, just an update on this link that I posted.
While the screen looks better, its a clearer overall look, I cant do
full screen video without 30 seconds or more of lag time. And switching
back out of full screen is another 30+ seconds. Also, Im noticing my
screen starting to lag more.

Im uninstalling this driver.

Played with a friends computer who has nvidia. Might get one of those
cards. Doesnt seem to have this trouble.

Hey, just an update on this link that I posted.
While the screen looks better, its a clearer overall look, I cant do
full screen video without 30 seconds or more of lag time. And switching
back out of full screen is another 30+ seconds. Also, Im noticing my
screen starting to lag more.

Im uninstalling this driver.

Played with a friends computer who has nvidia. Might get one of those
cards. Doesnt seem to have this trouble.

I would wait.

Ubuntu is switching to Plymouth with Lucid Lynx and Plymouth does not work
with Nvidia proprietary drivers, or at least not without lots of grief. My
Fedora 12 does not have compositing due to the Nvidia/ Plymouth problem and
my Lucid Lynx does not get any graphical because I tried to install Nvidia
proprietary drivers form their own repositories.

I love my Nvidia card, but am thinking of getting an ATI if Canonical does
not get it right. So far they have not.

The proprietary drivers have always lagged, and typically don't work in
beta releases, I've seen this time and again - no worries, nvidia
drivers on lynx should be tip top by the time it's released.

I have tested every version of Ubuntu from alpha with never a problem until
now.

You don't get the problem. It is not the driver. It is Plymouth. It uses
KMS and that does not work with Nvidia's proprietary drivers. Period. Nvidia
has been working on this problem since Fedora 11 and still no light at the
end of the tunnel. This has been a problem with Fedora users. You can work
around it, but it is a major headache. So far I am not impressed. I have
used both Fedora 12 and Lucid Lynx and my graphics card has not a had a
problem with any distribution and I test dozens except for these two. Both
use the same graphical boot loader (Plymouth). That is the common
denominator.

The only distribution that I have used that uses Plymouth that worked out of
the box with my Nvidia card is Mandriva 2010. Do a Google search and you
will find that Nvidia users who use Fedora are unhappy and that is going to
spread to Ubuntu if they don't improve things.

I am not giving up, but I am frustrated. Lucid Lynx won't boot into GUI and
Fedora is stuck in 2D. It is the same problem. I never had a single problem
with usplash (the old graphical bootloader) and I have been using Ubuntu
since early 2006.

I've tested alpha and beta versions of fedora core, suse pro, sles,
sled, opensuse, and every version of ubuntu since 8.04, and the nvidia
drivers never worked in the alphas or the early betas. Sometimes they
were fixed in late betas, sometimes not until RC time.

I'd be willing to bet you a large sum of money that the nvidia drivers
will be working fine on lucid lynx by the time it's released :/

Let's hope that you are right. I don't think that many Nvidia users would be
patient or do without compositing.

I sure wouldn't stand for that!