Ok, i don't know if the K8T800 is supported, but i know it WORKS fine if you use kernel 2.4.23 and configure the agp like mine - config attached.
I'm not going to type all of this stuff again, but like i said above, goto this link in these threads http://www.nvnews.net/vbulletin/show...hreadid=22036.
This worked for me. I have agp enabled, and i am using the AMD64 Athlon 3200 with the Asus K8V Deluxe which uses the same chipset as everyone else in this thread (well at least Otan). Again, i'm using the 4620 beta drivers that i got from a link posted on this forum and i installed them just like any other of Nvidia's *.run files.
All i am saying, is that it worked for me and i'm going to do my best to get it to work for everyone else out there that has the same chipset and wants to use their computer and not wonder (like me for a couple of weeks) if they wasted their hard earned coin.
Gentoo Linux-64, AMD64 Athlon 3200, Asus K8V Deluxe, 1 gig(3200 400mhz) ram, GeForce FX5200 128, HP 400i DVD+R+RW, HP ScanJet 2200c, Epson Stylus C84, JVC DRV3000U (firewire - usb), Kodak CX6330