Hey Sudheer,

Well I'm not sure if there are any anti-virus programs that still exist for windows 98, but you can use AVG (AVG Free Advisor: Free anti-virus, anti-spyware and anti-malware tools) if you are using Windows 98 SE (second edition). But to be honest, I don't think you really need an anti-virus program if you are running 98, its pretty much immune to all the new viruses that are mainly written for XP, and there are almost (I'm saying almost because there might be a couple of viruses here and there that aren't known yet) no viruses for 98.