Whenever an Internet Explorer (IE) browser add-on (toolbar) is installed,
you should check your system to see what files are used by this add-on tool,
and how it is configured on your system.
What files are used by Alexa Toolbar? Using the file explore, you should
be able to find the following files:
C:\Program Files\Alexa Toolbar\uninstall.exe
C:\WINDOWS\System32\AlxRes.dll
C:\WINDOWS\System32\AlxTB1.dll
How Alexa Toolbar is configured on your system? Using HijackThis, you should
be able to find the following extra lines in the HijackThis scan report:
O2 - BHO: AlxTB BHO - {F1FABE79-25FC-46de-8C5A-2C6DB9D64333}
- C:\WINDOWS\System32\AlxTB1.dll
O3 - Toolbar: Alexa - {3CEFF6CD-6F08-4e4d-BCCD-FF7415288C3B}
- C:\WINDOWS\System32\SHDOCVW.DLL
O8 - Extra context menu item: Alexa Web Search
- http://client.alexa.com/holiday/script/actions/searc...
O8 - Extra context menu item: Get Alexa Data
- http://client.alexa.com/holiday/script/actions/sited...
O8 - Extra context menu item: Mail to a Friend...
- http://client.alexa.com/holiday/script/actions/mailt...
O8 - Extra context menu item: See Related Links
- http://client.alexa.com/holiday/script/actions/relat...
O8 - Extra context menu item: Write a Review...
- http://client.alexa.com/holiday/script/actions/revie...
The setting related to C:\WINDOWS\System32\SHDOCVW.DLL
is kind of strange, because SHDOCVW.DLL is a Windows system
DLL file. Why Alexa Toolbar is using a Windows system DLL
to serve its function directly? | 
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