This problem has been brought up a few times before. People have asked about doing it in C++/Java, and the short answer has been "no." Check out
this thread for some ideas (it seems you can do it by calling a
directX or
xinput library to control the rumble yourself (read
this thread)). There's also probably some information on the topic on
NI's Forums about the topic. I'm not entirely sure how to do that in LabVIEW, though (I suggest you do a little research, starting
here). If you get anywhere, let me know, it might be cool to play with this sometime.