Hi, I tried out free PC tools anti-virus/threat fire, and decided I was not happy using them as it repeatedly would say that nearly all sites were high risk so I aborted them, but it really messed up my pc as I was removing sites that I already had and wanted to keep! I managed to remove PC tools anti-virus, but I am having great probs in removing this Threat Fire. I have tried everything to my knowledge, the add & remove area, drive C program area, unlocker, programs area, search, etc; it keeps reading; cannot delete engine dll, access denied, write protected? please help its driving me mad, I have 31Mbs I dont need!!!