Making Google the Default Search Engine in Net

Open registry editor by going to Start then Run and entering regedit and navigate to following three keys separately and change it as shown below:

[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" .