Need to create date/timestamp or watermark when printed.....

I want to be able to have the time/date printed out on a pdf when it is printed. I could be as a header/footer or a watermark. It doesn't really matter. Is this possible? Can it be done in adobe reader. I need to do this on networked pc's and I just want them to print the pdf and it automatically print the date and time on it. The networked pc's only have adobe reader.

Thanks!