|It was made in 1998 and was designed to run in Dos.|
It won't install or run in Vista.
Apparently it WILL install and run in Vista if you use a virtual machine program.
Search the web using something such as:
Might and Magic VI Vista
Might and Magic VI virtual machine
There are lots of "hits" for Might and Magic VI .
Some even have downloads that include all the original patches that allow the game to work better.
There are lots of great old Dos games that were made in the 90's, the ones made in the late 90's generally being the best ones.
In some cases, people have gone to a lot of trouble figuring out how to get them to run properly in newer operating systems.
This site has a virtual machine program that allows you to run many old Dos games that used the SCUMM engine and similar, but it probably does not apply to Might and Magic VI .....
I tried it with several Lucas Arts games I have in XP and it's very stable.