That being said, if you want to "man-up" check out ZQuake from the SVN.
https://zquake.svn.sourceforge.net/svnr ... ake/trunk/
It isn't "easy". Not at all. But it works [well, it has QW physics in NQ but it does single player pretty well]. ZQuake is remarkably highly modded for not being highly modded, it has substantial changes but does an impressive job of running NQ mods in a QW protocol compatible way.