The file formats used are PowerPoint 4, PowerPoint 97 and Adobe Acrobat. You can download
the Adobe Acrobat reader from Adobe's web
site. Some of the Powerpoint files use embedded encapulated postscript
and will need to be printed on a postscript compatible printer to be viewed.
The Acrobat files do not show the images even when printed. We will be
updating these images shortly so that they can be viewed on screen and
in PDF format.