Someone else jump in...not sure I remember correctly. On the Mobilepro machines, it only displays SVGA using certain applications, such as Conduits Pocket Slides. On anything else it is strictly HVGA.
I can't remember what it does with the HP PCMCIA card...
Used to be we had standard NEC large screen projectors in our classrooms. They had a VGA input port. So I would take my Mobilepro and plug it in and give class lectures using a slide show I made up..just flipping between the slides using the spacebar. It worked fine as long as I didn't try fancy transitions and such.
Then we got a bunch of Samsung 700 DXn monitors which were 70" screens that replaced our overhead projectors. Much clearer and we could use them with the lights on. Anyways, they have Windows XP embedded built into them. All I had to do then was just plug in my PPT presentations on a USB drive and they would automatically run.
The university I worked for gave each of the instructors a Kensington wireless presentation thing...basically a wireless remote controller with a built in 2gb memory and a green laser pointer. We could then take it with us from class to class as we needed it.
Actually I looked on eBay and there are wireless controllers for
PowerPoint pretty cheap these days.
http://www.ebay.com/itm/Wireless-Presentation-Powerpoint-Remote-Control-Pointer-/140408694177?pt=US_Laser_Pointers&hash=item20b102a5a1
But you would need a computer to use it with in conjunction to your projector. Luckily our LCD screens had it all built in, so no additional computer was necessary.
And a lot of projectors these days have this built in
PowerPoint capability, such as the AAXA and Optoma projectors. But except in the larger lecture halls, we use the LCD screen and not projectors any longer....