Anyways, for those who want to prevent the redirection:
For Firefox:
A: Type about:config in the address bar and press enter.
B: If you are on Firefox 3, click “I’ll be careful, I promise!”.
C:

Now type keyword.url in the Filter field and set the value as:
http://www.google.com/search?q=

If you want Firefox to do a “I am Feeling Lucky” style Google search, use this value for keyword.URL:
http://www.google.com/search?btnI=I%27m+Feeling+Lucky&q=

D:  Also make sure that the value of keyword.enabled is set to TRUE. That’s it – now any query you type in the Firefox Address bar will go to Google, not OpenDNS guide.

For Internet Explorer :
A: Open the registry editor (Start -> Run -> regedit) and navigate to the following key in the registry:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
B:
If Windows Live Search is your default search engine in Internet Explorer 7,
open {0633EE93-D776-472f-A0FF-E1416B8B2E3A} and set the value of URL as:
http://search.live.com/results.aspx?q={searchTerms}

In case of Google, open the corresponding key and set the value of URL as :
http://www.google.com/search?q={searchTerms}