On this page you can find more detailed information on how to use and install the Download emofaces archive on your computer.
There are two answers for this question.
Programs to open the archive.
Yes, you may, as long as you don't make any money with the project and you credit www.emofaces.com as the source of the emofaces.
Detailed instructions on how to use my emofaces in Outlook Express.
This page gives detailed instructions how to use Emofaces' emoticons in Windows Live Hotmail.
Some links to sites which explain how to use emofaces in a large number of different programs.