So far this seems to work. The exe won't start up properly if it can't find MFC250.DLL. Try moving a copy of MFC250.DLL from drive_c/windows/system/ to drive_c/Program Files/ETS/PPGRE/PPGRE/. drive_c can be located by pressing the "Open C: Drive in Finder" button under the Advanced tab in the Manage bottles window.
Hope someone finds this useful