Showing PowerPoint (& Other) Presentations

It's been interesting researching some of the presentation tools available in Second Life ... especially those that can show the PowerPoint presentations I already have in real life.
A tool (Communal Whiteboard) I like is made by "Angrybeth Shortbread" (don't you just love the avatar names).
I just export my ppt slides as jpg images, upload them to S.L. and drop them in this display unit ... that simple ... all the controls are intuitive, see http://metalab.blogspot.com/2006/06/communal-whiteboard.html
We have put one on the roof of the curriculum tower but they may also be available elsewhere on isi ... you can also find links to a larger selection of display tools on the 6th Floor in the Technology Tower.