"I prefer not to install Visual Studio. But if I have to. The command line program is preferred."
You do not need to install Visual Studio only to run the .NET application - only for the .NET platform, which you can download yourself.
But if you want to determine if this is a .NET application, you can download and use the .NET Reflector or use the ILDasm that comes with the .NET framework SDK.
Mark ingram
source share