ClamXav finding trojans; what do I do with them?
I've read many of the threads on here about anti-virus programs for Macs; most people seem to think they are not necessary & can cause problems, so I concluded it was better to get rid of the 'Norton' that came with the Mac, & in the end I downloaded 'ClamXav'. But it keeps finding trojans & 'heuretics phsishing mail' (? what is that?). Found 7 so far today. This is making me really nervous; does it not indicate that in fact I DO need a good anti-virus program? I find it hard to believe that Macs are completely immune to viruses.
I also don't know what to do with these trojans etc that keep being found; I thought that ClamXav will delete them, but it's showing this message: 'One or more infected files were found, but were left where they are. You can either deal with them yourself, or scan again with the preferences set to move them into a different folder.'. Can someone please tell me how to 'deal with them', & how to change the preferences so that ClamXav will delete them in future? (I cannot see anything in the preferences...). Thanks
iMac, Mac OS X (10.7)