Are you having trouble getting the button values?
The Joystick Get returns a cluster that holds all the button values. These values are boolean and can be used with Case structures. See the attached picture.
Here is the 2009 Control Systems page
http://usfirst.org/community/frc/content.aspx?id=10934
I suggest reading:
Getting Started with LabVIEW for FRC
LabVIEW Robotics Programming Guide for FRC
LabVIEW FRC Help Document
Using the LabVIEW FRC Framework