PGP encrypts electronic mail, files, and instant messages, and also provides the ability to create and manage PGP keys.
The PGP 8.0 Public Beta 2 is not release-quality software, and as such should be installed and used only with care. You should always back up any critical data before using beta software, and you should not use this Public Beta in a mission-critical production environment.
More info:
hxxp://www.pgp.com/beta80.php#windows