Intel 810 and agpgart on 6.0-beta5

I'm trying to install X.org 6.8.2 on a new machine, and failing. I'm running 
6-BETA5.

When I try to run X (say with 'X -config /root/xorg.conf.new') it fails with

(WW) I810: No matching Device section for instance (BusID PCI:0:2:1) found
(EE) GARTInit: Unable to open /dev/agpgart (No such file or directory)

(If it helps, at this point the message "1. Analog Input Cannot Display This 
Video Mode" appears on the ttyv8 screen.)

I'm working on trying to figure out the warning, since I think my xorg.conf 
looks okay, but my question at the moment is how do I get /dev/agpgart? Sure 
enough it isn't in /dev, but I have 'device agp' in my kernel config, _and_ I 
have 'agp_load="YES"' in /boot/loader.conf. So I'm not sure why it's not being 
created...

http://www.seektruth.org/errors/Xorg.0.log
http://www.seektruth.org/errors/xorg.conf.new

Any ideas? Thanks,

-David

-- 
"What's the good of having mastery over
cosmic balance and knowing the secrets of
fate if you can't blow something up?"
-Terry Pratchett