In a way, what you are trying to accomplish is similar to running a Nintendo-64 game on a Play Station 3. You would need, at a bare minimum, an emulator, don't you think? Exe files are for DOS/Windows, which are operating systems unrelated to UNIX/OS X. For anyone to run them under OS X (that is, not in Boot Camp Windows) for Intel machines, you need either Vine or an emulator, such as VMware Fusion or Parallels.