I successfully used Port Out.vi to access the memory location for the parallel port using LabVIEW 7.0. However, I need this utility to work as part of a built application. When I created the executable, the cviVRXWrapper.dll seemed to execute, but gave me the an error, suggesting that the driver required for this operation was not running. What is this driver, why is it not part of the run-time engine, and how do I get it to load if the application builder installer doesn't take care of that automatically?