1. The htm file format will allow you to click through the slides one by one for each lecture. On a high-speed cable modem, these files load rapidly and can be viewed easily, but one at a time. Printing slides from this format is somewhat browser-dependant and may not always give good results.

2. The ppt file format will allow you to download the slides in Powerpoint 2000 or 2002 and view or print them as handouts using the Print (handouts) command. Each file will require much disk space, as well as a proper Powerpoint program.   Download the free powerpoint viewer here