Ya deepali , u have two options:
1. U can change Antivirus for Linux , U can use AVG Antivirus
Clamv Antivirus is also avaliable ( but not sure wheather its for MAIL SERVER or Its for Linux O.S)
2. U can download 2.6 series kernels source from the site
http://www.kernel.org/pub/linux/kernel/v2.6/
and upgrade your kernel to this version and after that just install that Trend Mircorvirus wall (Interscan wall) Antivirus software
Gaurav