I have a ViewSonic PJ458D DLP Projector. The remote control that comes with it does not operate the PowerPoint presentation on the computer. Does anyone have recommendation for a remote control/laser pointer that works with this particular projector?

ViewSonic is out with a new one called the ViewPen 100, a wireless presentation pen, that costs $ 400!!!! I'm looking something in the $30-$100 range.

Thanks