I about to upgrade all of my computers in the plant to windows 7 machines. My problem is that some of them are running Wonderware with Modbus Plus cards. I haven't been able to get my test machine to 'pass the MBplus resource to the WonderWare app (10.5) running in the Windows XPMode. Is it even necessary to run WonderWare in the 32bit mode or will it run in the native win 7 enviroment.