Those who have MS Office version of 2003 and below should download this version posted as
attachment.
And, the conditional formatting feature suggested by Raghav is not available in version 2003 and below. Those who want the duplicate entries to be highlighted should follow this procedure.
1. Identify the range, in which duplicates are to be highlighted. Let's say, the range is B2:B20.
2. Select the range as identified above (In this example, B2:B20)
3. Go to Format -> Conditional Formatting.
4. In the dialog box that follows (titled Conditional Formatting), change "Cell Value is" to
Formula is
5. Type the following formula in the next box.
(Please change the range to the actual requirement)
=COUNTIF($B$2:$B$20,B2)>1
6. Click on Format button in the same dialog box
7. In the following window (titled Format Cells), click on Patterns tab.
8. Select a color for highlighting duplicate entries.
9. Click on OK to close Format Cells window.
10. Again click on OK to close Conditional Formatting window.
Hope this will be useful to some of us.