I recommend you setup the editor like you are going to make q3 map.
* Go to the scripts directory under baseq3
* Rename the existing "entities.def" file to "entities.q3def" instead.
* Add "q1.shader" to the "shaderlist.txt" file
* Drop the
zip file into the baseq3 directory.
* Extract the zip file
* Open editor, make cool maps!
* Setup quake 1 compiler tools in maps directory
* Setup compiler batch file (remember special switches)
* Compile map
* Copy bsp/lit files to quake directory