This is a really simple LabVIEW program that sends the commands typed into the "Command to send" box over the specified COM port. It will display the returned characters into the "read string" box. Below, under "Attachments" you will find a link to download the executable and the source code. Please let me know if you run into problems or have suggestions for improvements. Also note that you will need to download the LabVIEW Runtime Engine for LabVIEW 8.2.1 from the National Instruments web site. You can get to it by clicking here.