In order to setup XFree 4.3, I made sure to execute the command “VIDEO_CARDS=”radeon” emerge xfree-drm” to install support for the Radeon card in the laptop, then I emerge’d XFree. Then I read a novel. And started another one.
In configuring XFree, I used the configuration file at henrik.org when running xf86config. I later had to edit the configuration file to get my USB mouse to work, and the linked configuration file reflects that, but the resolution and monitor setting are what I set in xf86config to enable me to run 1600 x 1200 resolution in XFree.