WarDraft allows you to alter images and campiagns from Warcraft II.
Once you have downloaded the 'data' file, use it to replace the srdat.war file. make sure you move the srdat.war file elsewhere somewhere else so you can return it if necessary.
Berthier is a DOS program designed to moderate campaigns without a referee. It allows for the movement of several units around a map, and although it was designed with the Horse and Musket period in mind, it works well for a short fantasy campaign. Download it and try it. Berthier was designed by Tony de Lyall
Roll Call is a fantastic program which allows you to organise your army and print out army lists and cards for individual units. It was made by John Martin
You also need to install the magic item file.
You also need the file for your particular race.