npresnel,
You can also search our site for example programs, specifically ones written in CVI that do continuous data acquisition. Here's a specific one I found that may show what you want to do. http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E79156A4E034080020E74861&p_node=DZ52302&p_source=external.
Good luck with your application!