These are the X server packages from XFree86 3.3.6. If you have a video card that is not working under XFree86-4.1.x, you can try installing the appropriate 3.3.6 server on top of your XFree86-4 installation to see if that gets it working. All of these servers will work fine with the newer libraries that are installed with XFree86-4.1.0. Also included in this directory is xset.tgz, the XF86Setup tool. This might come in handy for producing your XF86Config file. To use it, you'll need to install both the server for your video card and xvg16.tgz (16 color VGA server). Have fun!