Setting Password on Word and Excel Documents

I have a problem about securing my documents. I want to know how to set a password so that my Word and Excel documents will be secured.

I have a problem about securing my documents. I want to know how to set a password so that my Word and Excel documents will be secured.
It is very simple to add password to a Microsoft Word or Microsoft Excel file. I'm here describing password protection by encrypting documents in Office 2007
Open the Microsoft Word file that you want to protect by password. Then click on Office button, click prepare and then click encrypt document
Now a small window will appear, type password and then confirm password. That's it. You have successfully created a password protected file.
Same procedure is for Excel.
Now to verify that file is protected, close Office Word and then open the file by double clicking or from Word, open file dialog box, you will see that MS Word is asking for a password!
Setting password for Word Document and Excel is pretty much the same. Simply follow the instructions below. (See the image below).
For setting password in Microsoft Office and Excel sheet
1:Click on the Microsoft Office Button left top of the screen
2.Goto the Prepare tab and click on Encrypt document.
3.In the password field you can enter the desire password(upto 255 character)
4.click on Ok.
5.Retype the password again.
6:Click on Ok.