Data Cleanup - Deleting Duplicates

Hi,

Is there a way to use the delete duplicates tool without MS deleting every duplicated element?

An example would be if i had 5 lines of the same length on top of each other. I want delete duplicates to delete 4 of the 5 leaving me with just one to work with. Almost as if one of the lines is considered the original and the other four are duplicates.

Josh

I'm using SS3