You might want to provide a bit more information. Like, what is a VXR 600. Cisco has a VXR series, but that doesn't point me anywhere.

You know, this thread kept coming back to me in my travels, so, I tried a few Google tricks and ... could you mean XVR-600? I still couldn't find more info on the drivers for the device, but, I did come up with this:

http://www.java.net/node/671163

Maybe some of the links in that old Sun Forum thread might hold a solution to your problem.