If you want to be SURE to have no virus in your computer the answer is : you have no solution virus are in files so you have to make your antivirus check all the files on your computer to have a good level of security most virus leave a track in the system registry , and are stored inside the ../windows directory (especialy /windows/system32 ) so most antivirus software have a function called quick scan that check just the registry and the most "hot" folders . This is a lot faster than a full (every file) system check. The software I can suggest are for free -avast -avg -avira -lavasoft ad-aware( it is not antivirus but as a mater of fact it can find a lot of virus and its quick scan is very fast) -clam av (if you use linux) or if you are in the mood to spend some money -norton antivirus.
You will have to go into every file and find them >and if you do not know all the file names it may take a year or two that is what anti-virus programs are for.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.