Randall,

Repairing IE will have included re-registering thumbvw.dll. See MS KB194177 -
"Description of the Internet Explorer Repair Tool"
(http://support.microsoft.com?kbid=194177).
--
Mike Maltby MS-MVP



Randal O'Brian wrote:

Thanks for your reply. However, shortly after I posted
the original message, I remembered hearing somewhere that
IE is used to generate the thumbnails. So, I ran the IE
repair routine under Add/Remove Programs in Control Panel
and the thumnails came back normally. Whew! Glad that is
over.