Baltika_CA: You could try adding a modern quake engine to your install.
quakespasm works a treat:-
http://quakespasm.sourceforge.net/download.htm Pick the correct version for your OS (I'm running Win 8.1 64 bit), unzip the package, drop the files into your C:\Games\Quake folder (wherever your main quake install folder is located) then run quakespasm.exe. It will detect your quake install and run the game with full widescreen, multi-resolution support, etc. Just configure your desired resolution from the ingame menu.
quakespasm also has the advantage of being able to run the soundtrack files from your HDD, no need to mount the cue files to ge the background soundtrack playing.
You can also use it to run the add-on packs, just alter the GOG shortcuts like this:-
(Right click on the shortcut, select "properties, then edit the "Target" line)
Base Quake:-
"C:\Games\Quake\quakespasm.exe"
Dissolution of Eternity:-
"C:\Games\Quake\quakespasm.exe -game rogue"
Scourge of Armagon:-
"C:\Games\Quake\quakespasm.exe -game hipnotic"
I couldn't get hte command line function to work either, but this is a handy workaround.
Slainthe!
Quakegasm worked like a charm. I also like there are versions for Mac and Linux (32bit and 64bit). Silky smooth. Gracias, homeslice.