Hello;
If you are using Labview to program the board, you can go to Search Examples->I/O Insterfaces->Data Acquisition->SCXI; and choose the SCXI module of yours.
If you are using another programming language than Labview and need to make NI-DAQ function calls; you can go to C:\Program Files\National Instruments\NI-DAQ\Examples\YOUR PROGRAMMING LANGUAGE\Scxi (where YOUR PROGRAMMING LANGUAGE is the language you are using).
Hope this helps.
Filipe