Main Executable?

Due to a computer crash about 2 or 3 days after first installing ArcGis Desktop a Windows Overlay had to be performed on my hard drive. Because of this all of my shortcuts have been deleted. I've been looking through the ArcGis Desktop folders for a min executable file to get ArcGis up and running, but cannot find it.

Does anyone know in what directory I can find the .exe that will start up the program?

Thanks!