i know what you mean, i have a network set up @ my house & a roomate that infected his computer with 2 strains of the love bug @ the same time . it spread to a couple of hd's, but fortunately nothing that wasn't backed up was destroyed. this is the 6th virus he has been infected with in the last 9 months.
I have been pretty darn lucky not getting viruses. I've been on the web for about 5 or 6 years and only caught a couple of them. They were easily removed with Norton.