Erasing all saved names from lookups . .

I don't know how else to explain this . . but, here goes.
I search different sites all day long. How can I easily erase all the data
that is saved from the different sites every time I go in and search a
different name?
For instance, when I search Yahoo for a telephone number, the names that
I've searched stay there. I used to be able to highlight them all and then
delete. Now, with the Vista software, I have to highlight each one
individually, and then delete. This is very time consuming.
Is there an easier way?




--
debarybabs