Hi,
to save numeric data to binary file you can use VIs from "Functions->File I/O->Binary File VIs" palette. There are "Write to I16 file.vi" and "Write to SGL file.vi" which allow you to write 1D and 2D arrays of any size to the binary file. The first one saves data in I16 format, and the second one as a number with floating point in single format.
Good luck.
Oleg Chutko.