These are for Microsoft Word & Excel files (copied from Help function):
Caution - instructions may vary on different versions of Word & Excel, these are from the XP version.
For Microsoft Word
Require a password to open or modify a file.
When you create a password, write it down and keep it in a secure place. If you lose the password, you cannot open or gain access to the password-protected document.
1. Open the file.
2. On the Tools menu, click Options, and then click Security.
3. Do one of the following:
Create a password to open
1. In the Password to open box, type a password, and then click OK.
2. In the Reenter password to open box, type the password again, and then click OK.
Create a password to modify
3. In the Password to modify box, type a password, and then click OK.
4. In the Reenter password to modify box, type the password again, and then click OK.
For Microsoft Excel
Protect a workbook file from viewing or editing
[list]1. On the File menu, click Save As.
2. On the Tools menu, click General Options.
3.
Do either or both of the following:
[list]