You may want to try contacting the folks at Blue Earth to see if they may be able to help you with an electronic copy of the manual. They were originally from back in my home state of Minnesota. They do seem to have been acquired some time back by another company called Valco

http://www.blueearthresearch.com/databkit.htm
http://www.blueearthresearch.com/msftbk.htm

You could also attempt to locate and contact Steve Ciarcia. He used to be connected to MicroMint and Circuit Cellar magazine. You might try here (he has an email contact via the magazine web site):

http://www.circuitcellar.com/contactus/staff.html

Michael Karas