This is a telltale sign that the system may be infected with Happy99. In order to remove Happy99 from your system, please click here . Macintosh, WebTV, and Windows 3.1 and 3.11 are all immune . The Happy99 Sreen. Technically, Happy99 is not a virus.
Viruses typically infect other programs in order to propagate.
Happy99 is actually classified as a worm, which does not have this limitation. Since it also pretends to be a harmless program, it is also classified as a Trojan Horse.