Two folders in my Path environment variable that each contain EXE with same name, which one will run?
Solution 1:
The one in FolderA will be run.
The path is evaluated in the order it is listed, with the current folder preceding it.
Windows doesn't care about the version of the application.
See http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/path.mspx?mfr=true (though this is for XP).