I am aware that there are ways to "string" together multiple separate Powerpoint presentations so that I can transition from one to the next without interrupting the flow of the session. Is this a Powerpoint feature or would I need external software to do this?

Also, I believe that it may be possible to run a presentation remotely using a wireless control to the projector and have the laptop with the presentations some distance from the projector. I know this second question is not really a Powerpoint issue, but if any power users happen to know how, too, I would appreciate a point in the right direction.