To clear the list of recently used files in Word 2007, you have to restrict
the list to no entries. To do this, follow these steps:
1. Start Word 2007 program.
2. Click the Microsoft Office Button, and then click Word Options.
3. In the left pane, click Advanced.
4. Under Display, type 0 in the Show this number of Recent Documents box.
5. Click OK.
After you follow these steps, a list of recently used files will not be
displayed. If you want a list of recently used files to be displayed again,
repeat steps 2 through 5. Then, type a number other than 0 in the Show this
number of Recent Documents box.