Re: can't get AGP to work.
Which AGP (Nvidia or FreeBSD) driver are you trying to use? The agp_load line in loader.conf will have it load the FreeBSD AGP driver while the NvAGP line you have tells X to only attempt to use the Nvidia AGP driver.
To use the Nvidia AGP driver on a FreeBSD system, I would leave what you have except for removing the line from loader.conf. See if that helps.