I haven't decided where to stick this yet (I suppose slackware:aiglx would be good…)
but anyway:
http://www.nvidia.com - you need the nvidia binary drivers
my xorg 7.1.1 and beryl 0.2.1 packages for slackware
installation instructions - for beryl, just install my beryl packages after installing my xorg packages
xorg7.1 for slackware
I had to tweak some things, and rebuild fontconfig (dropline's build) to link with /usr/X11R7
http://web.tiscali.it/meskalamdug/aiglx-en.html - general install instructions