Map viewer for windows, uses original graphics so you will need colonization installed.
You will also need .NET 2.0 installed.

http://www.microsoft.com/downloads/details.aspx?FamilyID=0856EACB-4362-4B0D-8EDD-AAB15C5E04F5&displaylang=en

Update that can show units and colonies in a savegame, fixed some of the drawing as well.