(Take the quote marks (") out when installing the repository)
install
clamav
clamav-db
clamtk gui this needs perl
Klamav (kde3) you need this to for Kmail integration/screening config
install the Clamav addon for firefox for download screening
Having done this
goto yast System Services (runlevel) expert mode
Configure
Clamav-milter B 2 3 5 and start
clamd B 2 3 5 and start
save and finish
I support that Howtos shouldgo in the Howtos sunforum (seems at least rather logical to me).
And I want to add that most Linux users do not run Clamav or any other AV software (apart from the fact that Linux is allready a good AV tool in itself). Only eception is when they have to deal with files coming and going from/to Windows systems and thus want to suppress Windows viruses as a service to the poor Windows users.