DOS Based Program not Opening

I am in a terrible bind. Have to have this fixed by tomorrow morning, have been working on it all weekend. Here it is: I have approx. 50 computers I manage. They all run a DOS based program called rentroll. We all run win98SE. One of the pc's will not open the program when the shortcut is clicked. The screen starts to go black and then fades back to the desktop.When I access the rentroll program from the root, I get the error message: "WINOLDAP caused a divide error in module vgafull.3gr"
HELP! I cannot access technical support for this product becasue they are closed all weekend.

Take a look at this article http://support.microsoft.com/support.../Q195/1/76.ASP
the errors arent the same but the files in question & the problems are

Thank you so very much! https://discussions.virtualdr.com/