I had virus attack a couple of days ago. That was Conficker.B worm. Fortunately most computers on the LAN had updated anti virus and could detect it. But apparently some other machines couldn't detect the worm and therefore they are infected by the worm.
Every now and then, clients receive a virus detection warning on their computer that says Conficker.B is detected and removed/cured.
The question is how I can find the computer that is infected by this virus and is the source of infection on my LAN. I can not check computers one by one. I want a way/tool that gives me the infected machine.