Racer,
Shipped with DAQmxBase which are the drivers that are used with your card, there are a number of examples that you can take a look at to get your started. One in particular that I would look at is:
Cont Acq&Graph Voltage-Int Clk.vi
You can find it at in the following file path:
C:\Program Files\National Instruments\LabVIEW 8.0\examples\daqmxbase\Dynamic\ai
There is a Dynamic and Static folder, just use the Dynamic examples, it will save you some trouble and it is generally better to do everything programmatically (through Labview) when ever you can. This example will show you how to continously read data off that card and print it to the screen. From there you can take a look at some of the write to file examples that also ship with Labview, you can find them through the NI Example Finder then look under the Fundamentals folder for writing to a file example. Hope that helps you out.
-GDE