Some versions of Microsoft's Internet Explorer (IE) do not correctly display PDF documents or do not display them at all. There may be a problem with IE 5.0 and Acrobat 4 documents.

To print from IE you must always use the print icon displayed in the title bar of the Acrobat document window:

Using the intuitive and logical File | Print commands from the IE menu just results in the "frame" container page being printed. This says more about Microsoft's attitude to it's users than it does about their computer skills.

Netscape.

You can print using BOTH the Acrobat window icon (see above) and the File | Print frame commands in Netscape.
Strangely, the designers of Netscape made it intelligent enough to recognise that you want to print what you have on the screen. Microsoft still haven't managed this with version 6 - what does this tell you about Microsoft?