I have been getting two or three emails a day from people that I dint know with the netsky virus in the attachents. My virus checker (VET) catches them and cleans them, and I have set up some rules for my inbox to delete any emails that start with :- hi, Hi, Hello, hello, Important , and Information -: . The bad emails always start like that.
Also using Mozilla instead of ie so not as prone to baddies that might get in.