Hi Richard,
The hard drive is 40Gb with roughly 29Gb free on it. I don't think they were destructive, they were all the same one and I haven't noticed any problems. I'd put down what they were, but I've forgotten the actual name of them. I suppose it should be in the logs somewhere, I'll have a hunt and if I find it I'll post it here.
Why is NSW not any good? Is there another similar package that you would recommend, or should it all be done manually for best results?
Cheers.
Just found what it was called. Trojan.ByteVerify I've just checked the name out
Trojan.ByteVerify is a Trojan Horse that exploits the vulnerability described in Microsoft Security Bulletin MS03-011 and could provide a hacker the ability to run arbitrary code on an infected system.