JoshuaP,
I just figured it out that if you want to use the Message component of the SystemLink API in LabVIEW, the SystemLink Server has to be installed.
If you are using tags and file transfer, then you can use the NI Web Server alone.
Bummer....
Thanks again for all of your help.
Steven Howell
Controls and Instrumentation Engineer
Jacobs Technologies
NASA Johnson Space Center