If you have Instrument I/O Assistant 2.0 or later, you should be able
to get this to work by setting your termination character to \00.
You can do this on the Select Instrument Step by selecting the
"Termination character" drop down and selecting <custom>.
Then you can enter \00 as your termination character. On all your
Write, Read, and Query Steps, you should now see that your termination
character is "\00".
Instrument I/O Assistant 2.x ships on the Driver CD with LabVIEW 8.0, or any Driver CD since LabVIEW 8.0.
-Tommy