How to install RPMs

Please see below homepage.
How to use RPM?: http://www.rpm.org/

How to install ClamAV / KlamAV

Please see below homepage.
How to install ClamAV: http://www.clamav.net/documents/installing-clamav

Finding RPM Packages Compatible with Berry

Berry Linux is compatible with Fedora Core 6(0.76-) / 5(0.69-0.75)
/ 4(0.60-0.68) / 3(0.51-0.59) / 2(0.43-0.50) / 1(0.29-0.36).

So you can download rpms from Fedora’s site. For example, http://rpm.livna.org/ etc…