Thanks Richard........
I didn't run the Malware as far as I am aware. I realise that sounds unhelpful . The only thing I have run is an update from Zone Alarm Pro which I am assuming is OK and consequently didn't mention it in my first post. I am not aware of having been tricked into running anything else. Indeed my first realisation of there being anything amiss was when Spybot fingered it.
Does any of this help at all, or have I only served to confuse the issue?
Thanks,
N o t a