Originally posted by vvnnyc
is in Display settings an option Enable Hardware 3D Acceleration gonna be enable or not?
Not on RedHat. That "display settings" GUI program doesn't have a clue how the nVidia drivers work, so it won't let you enable 3D acceleration using it (it doesn't know how to do it).
However, as posted by others, if glxgears gives decent frame rates, and if tuxracer is playable at all (you may not have it installed -- if not, the packages are on the RH CDs somewhere), then you have 3D working. The glxinfo test is a good one as well.