hmm...
i always click on all attachments i get, anti virus programs only kill the performance (especially the ones with mail scanner) and never had a virus...

best for virus + spyware on a pc from a neighbour is 41 (popups popping up everywhere, linking to "special" sites

and he complained only about a programm which refused to work...).
with a good anti virus programm (some are even good and free) and brain 1.0 you should be safe..