How to prevent users to print Microsoft Word documents?  

Ok, book mark this page so that you can track it
when somebody provide a best solution for us.

["Rob their printers!"] hahahahaha! :D

This makes my day! :) Maybe you should consider awarding aroshu best response! :D

I don't know either, but I'm also interested, so I'll bookmark this. Thanks!

Thanks for your interest with the excel.
Yeah, if you did not consider the other lapses then it will be useless.
Example, if the user did not enabled the macros, then it is useless already.
so to have robust file,
first, create a new sheet and named it anything you want, but put some text to inform user that such page was viewed when macro is disabled, so they cannot use the original work file unless they enabled the macro.
create a macro before closing the file, to hide the original sheet and shows the sheet that you have created, and automatically saved the file. so every time the file is closed by the user, the default visible sheet is the one you have created. so when they disabled the macros, it is the one showing up and not the original sheet.

then create an opening macro to view the original sheet and hide the sheet you have created, so when user enabled the macro, it will show the original sheet and hide the sheet you have created.

finally, disabled the print events. that's it.

That's mighty cleaver and you can't use that in word because there is no sheet, then maybe set page and font to one color and disable/hide tools that would change that if macro is not enabled.

O yeah sound possible, thanks for the idea.
I can dig into it and will try to look for some codes
and will post it here once I found the work around.