Hi Steverino,
Adam is correct. There is a symmetry method that you can use. The best resource to check out is the NI-Vision Visual Basic Reference Help. It should be located in your C:\Program Files\National Instruments\Vision\Documentation directory, and will have the filename
cwimaq.chm. This will show you the parameters to use, the types of operations (vertical, horizontal, etc.) and some example code.
Regards,
Brandon M.
Applications Engineer
National Instruments