We hate to break it to you, dear readers, but we're in the throes of back to school season. In a few short weeks, lots of wide-eyed freshmen will be setting up their dorm rooms and begging off name games during orientation, which means they (and their generous parents) are stocking up on gear now. We've been testing a bunch of budget and mid-range laptops aimed at young folk and pretty much any other mainstream consumer who'd happily forgo some bells and whistles in exchange for a lower price. So why not start with a review of one of the best? Sony's VAIO SB series is the 13-inch laptop for the kindele who can't afford the