Broblems with Borland Builder 5

When I try to run a program, Borland tells me that it can't read the PE header of the program, or something like that. It was working fine for many weeks, so I tried to just run the .exe from explorer. The program prints out that it must be run under Win32. This confuses me, because I'm running windows. :confused:

I have several seemingly brilliant ideas on how to fix this, but I'm at home, Borland is at school, and in all my annoyedness, I didn't think of bringing the code home. I do not own borland, and never will, because it is crap. I really need the program running, because it was written for the counseling department at my schoo, and I'm supposed to present it tommorow. :eek:

Does anyone know how to fix this horrible evil mean error?
Thank you:D