Using the ActiveX control in LabView is actually pretty easy, although if you've never used ActiveX controls in LabView the first try can be a little frustrating. It certainly would have been nicer to have a standard DLL.
Anyway, I've attached a LabView 8.2 VI to turn an appliance module on & off to this post. I had to change the extension from ".vi" to ".jpg" in order to get the forum to allow the file to upload. To use it, you should just need to change that extension back to ".vi" and open it in the LabView environment.
You do, of course, need the SDK installed on the machine which you are running LabView on.