how to create a password for a document?

Answer 1

The PC I'm on now has Word 2000. To include a password when saving a file, choose:

File
Save As... (or Ctrl + F12)

In the Save As... dialog box:

Enter the file name
Select Tools from the menu bar
Select General Options
Enter password

It shouldn't be much different in different versions of Word.

Answer 2

What type of document? If it is a text document created in WordPerfect, you have the option of putting a password when saving. (not sure about Word?)

Anything else you can compress the file (.zip) and create a password when saving.