To learn more about LabVIEW it is recommended that you go through the introduction material, tutorial(s), and other material in the NI Developer Zone's Learning Center which provides links to other materials and other tutorials. You can also take the online courses for free.
Once you've done that, try out a few things and come back and post questions about what you're trying to do. At the moment your question is far too vauge.
For the DSA 8200 you can download the instrument driver from here: http://sine.ni.com/apps/utf8/niid_web_display.model_page?p_model_id=10073
