After several years I finally found a solution that allows an old DOS application to run on my 1Ghz PC.
Once I loaded the app on a machine faster than 300Mhz it would always generate the Runtime Error, and this is a well documented problem.
Thanks to the web and a guy named Shon i found this application that WORKS!!
http://digilander.libero.it/robyrobo/Products/
Remember – pay the guy it’s worth it.