If you are viewing/printing the handouts from your PC, and you don't have a pdf viewer, go the Adobe Home Page to download the free viewer.
To view/print pdf files on the Unix workstations in room 318, you need to use the Unix command "acroread". You can set up acroread as a plug-in in Netscape, or download the file to your Unix account and open it there using "acroread FILENAME.pdf".