I plan on getting the Expansion Sets to Duke 3d pretty soon, but this is just a Question on how to run them. I take it that I just copy the .GRP Files into the Eduke Folder, and from there I just select which one to play?

start reading;

http://wiki.eduke32.com/wiki/The_Official_Add-on_Installation_Guide

questions can be posted at this thread:

http://forums.duke4.net/topic/2231-the-official-add-on-installation-guide/