>I used to take that view until I got caught by a momentary lapse of concentration. I requested that a trusted colleague e-mail me an exe, when I got an e-mail back with an exe attachment, I opened it, only to find he had just been infected by a virus. This was someone I trusted & I expected an e-mail with an exe attachment, it had been a long, busy day & the exe was essential to get the job done. Fortunately, I realised what had happened & was clean within 30 minutes, but now I feel that a realtime AV scanner is worthwhile.

Only accept "zip" files; they can be explored on-line.