I was told there's a way to lock pdf files so you can send them
but the person who receive it can open it but can not resend it to
someone else. I'm using OpenOffice.org but can put Microsoft
office on if I need to.
The answer to your question is no. Once someone has a file (any file) there is no way to stop them from sending the file on. Even if there is security on it, if you give someone the key to access it, they can simply pass on the key.
Microsoft has the ability to limit document distribution in their enterprise level systems. It integrates Office, outlook, Active Directory, and permissions to restrict printing, forwarding, modifying, and even the number of times you can open a document.
Comments
You can password protect them, but if you give the password to someone, they can still send the password to the next person as well.
to prevent them from being resend. Thanks
You have run into the eternal struggle of DRM.
-Bobby
For what you are looking for, DogDragon, nope.