Change search settings

I get a message after boot up that `a programme has been blocked from changing your default search settings` Using avira, and have done spybot / adware/ but nothing found. is there a way to find the programme that is doing this and delete it. The pC appears to be running ok. thanks

Do you have the google toolbar, or google desktop installed? Uninstall it.

Aha! there is a small search tab at the top right hand of screen `google` I never noticed that. I will try and get rid of that and see what happens. thanks.