Firefox extension: Greasemonkey

Have you switched to Firefox yet? If you have, you need to check out the extension called Greasemonkey.

"Greasemonkey is a Firefox extension which lets you to add bits of DHTML ("user scripts") to any webpage to change it's behavior. In much the same way that user CSS lets you take control of a webpage's style, user scripts let you easily control any aspect of a webpage's design or interaction."

Next, you'll want to visit the Greasemonkey script repository and get Google Butler which gets rid of Ads, and adds links to other search engines.