is evil

Somehow, my browser has been altered so that, even though Google is my home page, my default search engine is now (mysteriously installed  by iMesh).  I want this crappy search engine off my browser and Google restored as my default, but I cannot for the life of me figure out how to do it.  Can one of you help me?  And could the rest of you form a mob to march on and burn their corporate headquarters to the ground?  Thank you!

Baf! Krak! Pow!
Order has been restored in Seattle
Resurrecting my address book
One of the Strategies for Making War on the Sacrament of Marriage