Got OpenDNS? search is redirected to pesky Yahoo? Want your Google back?

In Firefox go to About:config and change key keyword.url to http://www.google.com/search?q=

For IE it is a bit more complex:
In registry find HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes

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}

Technicals: I think OpenDNS redirects Google Searches to OpenDNS Guide if the “source” parameter is present in the search URL. Remove that from the address and OpenDNS would stop redirecting Google searches.