First answer in GOOGLE search for "EXPLORER caused an exception 6d007fH in
module WEBCHECK.DLL at" is
http://support.microsoft.com/?scid=kb;EN-US;Q250841 "Module Webcheck.dll"
Error Message When Opening My Computer or After Internet Explorer Upgrade
You too can google

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Etrust/vet/CA 12 Month free trial (till Feb 2005)
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Etrust/Vet/CA.online Antivirus scan
http://www3.ca.com/securityadvisor/virusinfo/scan.aspx
Panda online AntiVirus scan http://www.pandasoftware.com/ActiveScan/
Catalog of removal tools (1)
http://www.pandasoftware.com/download/utilities/
Catalog of removal tools (2)
http://www3.ca.com/securityadvisor/newsinfo/collateral.aspx?CID=40387
Blocking Unwanted Parasites with a Hosts file
http://mvps.org/winhelp2002/hosts.htm
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> I keep getting the following "EXPLORER caused an exception 6d007fH in
> module WEBCHECK.DLL at 017f:78b32599.
[quoted text clipped - 11 lines]
>
> WCD