I got to say, you may want to let her ruin it once. Just hear me out, trust me, when she experiences the horror of data loss, and the dread of not being able to start up her OS, she will become much better at this kind of thing, as well asmore cautious. Ahhh, I still remember when I crashed my first comp, what memories. But seriously, just backup everything, let her ruin it, and then come in and explain all about it. Tell her what to look for and give her a good anti-virus, preferrably Norton, because they catch more new viruses, and have proggies up on their site for viruses as well.