EnvyNG is in the repositories but here is the author's website where he
describes it. http://albertomilone.com/nvidia_scripts1.html

I have used it and successfully compiled drivers when they weren't in
Ubuntu's own repositories. Others may have different success, but I have
read many reports of others using it with success. It is one more tool
available to users to simplify a sometimes difficult task.

I don't think that it will help me with my Lucid problem though. The alpha
uses usplash still, but they are transitioning to Plymouth and have done
something that causes my Nvidia card not work with the proprietary drivers
that I have used since Hardy. I am NOT looking forward to Lucid if it
follows in Fedora's footsteps. Getting Nvidia proprietary drivers to work in
that OS is a royal pain in the butt and a major step backwards for Nvidia
users. I hope that Canonical is aware of the problems and does not leave us
in the lurch. So far it is not good.

Lucid did the following: when it installed it messed up grub2 on another
drive and wrote it to the proper drive, but mixed the kernels up. When I
tried to boot Karmic on another drive grub did not exist. When I chose the
Karmic kernel from the list it pointed not to Karmic, but to Lucid. That
meant that I could not load Karmic without using the Live CD to fix it.
Things got worse. when I installed the proprietary Nvidia drivers (the same
ones I have always used, I could not get a GUI back. I purged xserver-xorg,
cleaned apt and re-installed xserver-xorg. It has a dpkg error that nothing
will clear. So the next step is to wait for alpha 2 and re-install. The pain
of testing alphas has never been so bad.

A word of warning: if anyone is using Lucid be careful and if you have an
Nvidia card wait awhile before using the proprietary drivers. Enough of my
complaining...

Yes, it should give you full use of the ATI card's capabilities.