I've had a number of clients complain that they just want their computers to 'work', without having to worry about new virus definitions, Windows updates, updated anti-spyware software, and firewall patches.  "Just fix it so I can use it and not worry about it", is the common theme. 

Those days of carefree Internet use are GONE.  To some degree, these things can be automated, but for the most part, you will have to learn to watch over them (or you'll be taking your PC in for 'cleaning' frequently).  Here's a good article at PCWorld that helps explain why.