Many, many thanks to Stelian for his excellent blogs but still one remaining issue. I have set out what I've doen and what is the rmeining issue below.
First, I found the activation key for Antivirus Security Pro on another google search which allowed me to work without interference before I found your blog. I have run through all the steps on Option 2 in http://malwaretips.com/blogs/file-contained-a-virus-and-was-deleted-removal/#safemode (since that was the first problem this Antivirus Security Pro created) and then I followed this guide. After each step I tried to turn back on my McAfee firewall but it woudl not let me. Windows firewall would also not turn on and I got "Windows Firewall can't change some of your settings. Error code 0x80070424". So I decided to run Combofix. To be absolutely sure ComboFix would work I uninstalled McAfee including using their specific removal utility MCPR.exe. On reboot, the windows firewall was working (not sure whether Combofix or removal of McAfee cured this. I then also run ESET Services repair utility to be sure everything was restored to normal. This has taken many, many hours over several evenings but well worth it!
The only remaining problem is that in Start->All Programs I still have a folder named Antivirus Security Pro in which there seems to be the program and an Uninstall utility. I dare not try to see if it is actually there nor do I dare try to run the uninstall in case the infection starts over again. Any advice on whether this is still an issue and also how I can remove it from the progeams menu (it doesn't appear to be listed in Program flies in my C drive so not sure whether anything is actually there).
First, I found the activation key for Antivirus Security Pro on another google search which allowed me to work without interference before I found your blog. I have run through all the steps on Option 2 in http://malwaretips.com/blogs/file-contained-a-virus-and-was-deleted-removal/#safemode (since that was the first problem this Antivirus Security Pro created) and then I followed this guide. After each step I tried to turn back on my McAfee firewall but it woudl not let me. Windows firewall would also not turn on and I got "Windows Firewall can't change some of your settings. Error code 0x80070424". So I decided to run Combofix. To be absolutely sure ComboFix would work I uninstalled McAfee including using their specific removal utility MCPR.exe. On reboot, the windows firewall was working (not sure whether Combofix or removal of McAfee cured this. I then also run ESET Services repair utility to be sure everything was restored to normal. This has taken many, many hours over several evenings but well worth it!
The only remaining problem is that in Start->All Programs I still have a folder named Antivirus Security Pro in which there seems to be the program and an Uninstall utility. I dare not try to see if it is actually there nor do I dare try to run the uninstall in case the infection starts over again. Any advice on whether this is still an issue and also how I can remove it from the progeams menu (it doesn't appear to be listed in Program flies in my C drive so not sure whether anything is actually there).