You don't need MAX but if you're using VISA, then you'll need at least VISA run-time engine. If your're using DAQ, then you'll need NI-DAQ. If you're using GPIB, then you'll need NI-GPIB. MAX is a utility program for configuring NI hardware and software and is not the drivers. You don't mention which component you're using but if there's harware involved, then you need a driver for it. Applications with only serial communication can be the easiest to install. If instead of VISA, you use the serial compatability VIs, then you all you need do is install the file serpdrv in the same folder as your built application.