If you run IE6.x, try this reg file;
(Copy everything ~between~ the double-lines, including the empty line at the end)
===========================================
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]
"Search Page"="http://www.google.com"
"Search Bar"="http://www.google.com/ie"
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchURL]
""="http://www.google.com/keyword/%s"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search]
"SearchAssistant"="http://www.google.com/ie"
=============================================
Save it as google.reg. Right-Click on it and choose MERGE. Confirm.
CAVEAT: Create a new Restore Point before running, just in case your machine is weird.
It's a good day when you learn something