Hopefully this will make someone happy.
After playing with Quake 2..
I took a stab at Quake 1. Code was only slightly harder to port because of the old MGL lib. Anyway.. here it is.. Quake 1 (with optional software OpenGL support --- VERY SLOW)
Game runs very well (non-opengl) and full screen support works nicely.
Because its difficult to extract, I've included the PAK file from the _demo_. If anyone has any issues with that, please contact me and I'll replace it with a binary package. As is, you should be able to just extract it and run WinQuake.exe (or glquake.exe if you'd prefer a slower experience!)