I still stick with my previous post, going into IE7 via the 'welcome centre/connect to the internet' is a possible by-pass but not a cure for this annoying error message. However, I have since cured the problem, the way I expected I'd needed to by a Manual Registry Change! Then again, it was not as difficult as I expected, if you go to the computerperformance.co.uk site there are clear step by step instructions on performing registry edits in Vista.