Naturally Norton wasnt able to fix the problem which subsequently ended up redirecting some of my google search links to ad sites etc.
Strangely however after this virus infected the PC, Norton Systemworks' main menu wouldnt open. I tried for ages to get rid of the [bleep] but to no avail. In the end I used a program called FixWareout (specially made for Unspy PC virus) and HijackThis.
Moral of this story: disregard the fools at Symantec who made 'Fix problem' the reccommended option.