I've removed some sort of fake antivirus/firewall malware using SuperAntiSpyware which found and removed around 5900 bits and pieces and which seemed to have cured things.
However, on a reboot I can't run most programs. They either throw up an access denied error or a rundll32.exe missing (which I replaced without improvement) and just downright refusals to run.
I can't run things like Combofix at all and am at a bit of a dead end.
Anything to suggest that might help?