I think that if I wanted to create a virus and spread it to as much computers as possible, I'd get a copy of a program that lets you create a virus by clicking certain boxes (I think it is called viral box builder or something) so none of the antivirus programs will recognize it, make the virus become active after a month after downoading and make the virus disable the antivitus updates, copy my Windows swapfile and rename it Photoshop 7_5.exe Poser5beta.exe, etc, take a hex editor and attach the virus to it, start an ftp server and announce it to as may warez sites as possible, install all the peer to peer programs I could get my mutts on and laugh my head off. The motto is: garbage in, garbage out!