Clam antivirus

I have been trying to set up Clam antivirus again and I must say I find milters a little bit confusing. I did previously have clam working on a milter and moved to Panda as work had Panda and it included a Linux version. This set up without a hitch, however they have now stopped their Panda licences so I am moving back to Clam. I installed all the Clam kit from the Dag repositories (clamd, clam-db, clam-milter etc.) and installed. I can get the Clam daemon (clamd) working fine, and I am well used to setting up milters using sendmail M4 but the miter itself is the problem. I cannot start the clamav-milter program, at least it doesn't show in ps -aux.