I have been in the past extremely cautious abouot PC programs and avoided viruses but now have a PC directly connected to the net which is more vulnerable.

As I have a mixed environment I'd like to have a (probably) PC-based anti-viral package that will be doing effective checking on shared OS/X volumes.

Any recommendations?

CSIRO use McCaffee internally (which finds lots of viruses in my email attachments, of course).

In particular, I want to buy under a "mini enterprise" license if possible so I can pass on a copy to my parents. (Although 2 copies may be cheaper).

A major factor is the ease of updates and size of update patches for their dialup (no I can't get them back to a Mac, after my Mum's beloved Classic was blown up by a power surge, my brother migrated them to PC and they stuck).
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Andy Dent BSc  MACS  AACM   http://www.oofile.com.au/
OOFILE - Database, Reports, Graphs, GUI for c++ on Mac, Unix & Windows
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