thanks Howard
i have gone through those steps and my VET virus scanner now claims to be picking up vundo!generic, although AVG Anti-Spyware says it cant find anything and all the other programs which i downloaded and ran seem to not be picking anything up
however, the darksma problem does appear to have been fixed.
i have attached the HJT and Combofix logs. AVG Anti-root also claimed to not find anything.
not sure if the logs came through, so will try again