The first step is to unzip the distribution package. Unzip the file "aberquest_x_x_x_win.tar.gz" (where x_x_x represents the version number), into a directory of your choosing. These instructions will assume that it has been unzipped into C:\AberQuest. Feel free to make a shortcut to the AberQuest executable if you wish.
If you don't have Qt 2.3.0 Non Commercial or better installed on your system, download a copy of the necessary DLL. Simply unzip this file into C:\AberQuest, or you can place it in C:\<Windows>\<System>\, where it can be used by other applications in the future.
Once you've unzipped AberQuest and have Qt on your system, you are ready to run AberQuest! Simply start AberQuest, and open up a zone/quest file to get started.
The first step is to get a makefile for your system. The makefile included works for my config of Windows with MSVC++ 6.0 and Qt 2.3.0 Non Commercial. To get a makefile if your system is different, simply use tmake:
tmake -o makefile aberquest.pro
Depending on your system, you may need to make some modifications to the aberquest.pro file. For example, if you have the professional version or are working under *NIX, you can link statically to the Qt library if desired.
After you have your makefile, you should be able to simply invoke make on your system. On Windows, this will be nmake.