Ah ha - found it. Here's the utility that can remove / clear it for you:
http://www.ccleaner.com/

It's eye opening to do a search for index.dat on your computer and then open it up in notepad. Deleting history doesn't REALLY delete it all.

Me 35, H 38; Together 13.5 yrs, M 7
Bomb 1 10/07/06
Sep'd 1/14/07 - 4/15
Piecing: 4/07 - 9/07
Bomb 3 10/11/07: Never loved you, let's separate
2/08 slowly improving
7/08 Piecing (7/25/08 rings back on!!)
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