You probably want to take a look at the "Plug and Play" ones, as they're written in LabVIEW. I haven't looked at them, but there's probably a VI in there to get the waveform. You can use the IVI drivers, but you'll need to install the IVI Compliance Package.
These will capture a screenshot, not transfer the data that created the image. The alternative is to download the data using the drivers mentioned and then create your own chart/graph using LabVIEW. You could save the image to a file using the indicator's methods and properties from the block diagram.
