Yesterday a friend who has worked in customer service came over and helped me fine-tune the puter. She told me to find a largish, blank area in the toolbars and right click. Then a menu appears and you can uncheck various toolbars.

I had asked a software specialist (third-level up) about that, and he didn't know it.

SRS, you are right that the Yahoo toolbar keeps coming back. Now at least I can zap it, if only temporarily.