It worked. I've done multiple searches in Google and Yahoo and the redirects are gone. Give my thanks to jpshortstuff. There are some tools and files downloaded to my desktop which are RSIT, DNSCheck, RegQuery, DirLook, Regfix.reg. Could you tell me which ones I don't need? Thanks, Ken.
GooredFix v1.3 by jpshortstuff
Log created at 12:19 on 14/12/2008 running Option #2
=====Goored Deletions=====
[HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\extensions]
"{609E0751-889D-402A-B225-DBA0ACE20764}"="C:\Documents and Settings\Allen\Local Settings\Application Data\{609E0751-889D-402A-B225-DBA0ACE20764}"
->Deleting value... Done.
tif0o28q.default: Extension0=C:\Documents and Settings\Allen\Local Settings\Application Data\{609E0751-889D-402A-B225-DBA0ACE20764}
->Removing loadpoint... Done.
C:\Documents and Settings\Allen\Local Settings\Application Data\{609E0751-889D-402A-B225-DBA0ACE20764}
->Emptying folder... Done.
->Deleting folder... Done.
=====List of possible loading points=====
tif0o28q.default: Extension2=C:\Program Files\AVG\AVG8\ToolbarFF
tif0o28q.default: Extension1=C:\Program Files\AVG\AVG8\Firefox
=====List of possible folders=====
C:\Documents and Settings\Allen\Local Settings\Application Data\{3248F0A6-6813-11D6-A77B-00B0D0150060}
=====List of possible registry values=====
[HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox 3.0.4\extensions]
"Plugins"="C:\Program Files\Mozilla Firefox\plugins"
[HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox 3.0.4\extensions]
"Components"="C:\Program Files\Mozilla Firefox\components"
[HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\extensions]
"{1d5287d1-8a92-0001-1f31-1cec198018d8}"="C:\Program Files\AVG\AVG8\ToolbarFF"
[HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\extensions]
"{3f963a5b-e555-4543-90e2-c3908898db71}"="C:\Program Files\AVG\AVG8\Firefox"