It depends on where the other copies are. Remember if Windows does not find an item on the path called from it goes C:\, then C:\WinNT, then C:\WinNT\System32 and a couple of other places. Rename, move out of a path, or remove the others should allow it to find the one you want.
"Don't roll your eyes at me. I will tape them in place." (Teacher on Boston Public)