I have a Symmetricom bc637 card and the software development kit (SDK) for the card. I have been able to talk to the card using LabVIEW library function calls using the dlls provided with the SDK but now I need to set up for interrupts. The example code they provide sets up a thread that polls to see if an interrupt has been generated and then prints "Got Interrupt". I could easily copy their example written in C++ and put in my own requirements but I can't see how to do this using LabVIEW. It looks like I would have to write a dll using C++ to start a thread. Is there some other way to do this?