madimax

I get an infected PC and I can't go on Lavasoft web ! (I can reach some url, but not on lavasoft, avast and spybot !) So I want to load on another PC (not infected) : - the lavasoft software (set up) - the last database available and then put on the infected PC to clean it. Is it possible and if yes how to do it ? thank's in advance for your help.