I found one here;
http://shrines.rpgclassics.com/pc/mm3/downloads.shtml

But can't get it to work in windows 7. I screwed my game up as my characters are permanently 156 years old. I don't see any way else but to use a save game editor, but I can't find another one.

Anyone know how to get the above editor working, or know of another one?

It's pretty amazing that they made it so easy to totally screw up your entire game like that, but I guess that's the way it was back in the 'old days'!

Run it through DosBox.

Gah! So obvious! Thank you, you saved my game!

Thats a think the M&M series is (in)famos for..there many ways to destroy your Game during the first Playthrough if you don't make several "Longtimesaves"

After my first MM..i started to make extra Year and Month saves for my MM-games...and even then i managed to destroy my game the first time i played MM 7;)