I don’t know of a way to prevent a document from being printed.
To prevent it from being edited , you could protect the document.
In version 2003:
- Go to “Tools” -> “Options”
- Click on the “Security” tab, and set a password in the “Password to Modify” field.
In version 2007:
- In the “Review” section, click on “Protect Document”, and set the desired protection settings.
You can also set NTFS permissions to prevent the document from being changed.