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Mark, if the case were the professor not using $500 software, then why would they ask for PowerPoint?


That part has me puzzled, too. Probably because most people have heard of "powerpoint" files, but it's very suprising how many are *still* clueless about "pdf" files. And most MS programs make it very difficult to create "pdf" files, although perhaps O2007 has fixed that (?).
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Why not a PDF which can easily be marked up with all sorts of tools, some of them free or close to it.

I don't have any tools that can mark up a pdf file, and don't know of any. I do know of lots of them that can create pdf, and powerpoint, and ..

Cheers