What is FlashPaper you ask? From the website:
Macromedia FlashPaper printer driver technology for Windows 2000 and XP lets Contribute 2 customers transform any printable document into a compact, web-friendly Macromedia Flash format and then embed the document as an intrinsic part of a web page. The end result is an unbeatable document viewing experience for website visitors.
Once you see an example, it makes a lot more sense.
You can find more info on FlashPaper here.
You can find more info on Contribute here.