how to protect a word file
you can easy to protect a word file .. you can protect word 2007 and 2010 files
How to Password Protect a Microsoft Word 2007
Click Save As and save it as a word document.
Click Tools, then scroll down to General Options (on the bottom left).
Choose a password for opening the document.
Choose a password for modifying the document.
How to Password Protect a Microsoft Word 2010
Click Prepare. This is where you'll encrypt the document.
Enter a password.