Graphic Acceleration worked on my second Computer with a Riva TNT out of the box! There was a nifty "enable 3d acceleration"-Button, and it worked (X v4.0). On my primary Computer (Voodoo Banshee), there were more problems, because the (included) DRI-drivers didn't work until now :(
But the Install is very, very simple, fast and since all the programs are on 1 DVD, no more need to be a DJ. But after all it is very configureable, too. You can use some base selections, but enable-disable evry single packet (from the 1800).
I had a great experience with it!