Try this.
1. Close all instances of Internet Explorer, click Start, point to Settings,
and then click Control Panel.
2. Double-click Internet Options.
3. Click the Advanced tab.
4. Under Browsing, click to clear the Enable third-party browser extensions
(requires restart) check box.
5. Restart Internet Explorer.
Do you get an error now?
Is Iesdsg.dff maybe really Iesdsg.dll? Iesdsg.dll seems to be part of
Spyware Doctor SiteGuard. This .dll file is a Browser Helper Object (BHO)
that runs automatically every time you start your Internet browser.
Spyware Doctor
http://www.pctools.com/spyware-doctor/
How to disable third-party tool bands and Browser Helper Objects
http://support.microsoft.com/kb/298931
O2 - BHO: PCTools Site Guard - {5C8B2A36-3DB1-42A4-A3CB-D426709BBFEB} -
C:\PROGRA~1\SPYWAR~1\tools\iesdsg.dll
O2 - BHO: PCTools Browser Monitor - {B56A7D7D-6927-48C8-A975-17DF180C71AC} -
C:\PROGRA~1\SPYWAR~1\tools\iesdpb.dll
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Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
In