Just recently I've started having ads in Internet Explorer. for all kinds of things I'm not interested in, opening up without warning when I'm using Firefox.

It's getting to be a nuisance. Anybody got any suggestions for how I can stop it happening? I hardly ever use Internet Explorer, so I wouldn't mind getting rid of it, but so far as I know there's no ready way to do that. And I'd sooner keep it available as a back-up anyway.

I've got Spyware Doctor, which I'd have thought would stop this kind of stuff happening, and AVG for keeping out the viruses.