A PC contains several pounds of wires, slots, cards, and chips—enough hardware to open a TrueValue store. Fortunately, you don't have to worry about making all of your PC's preinstalled components work together. In theory, at least, the PC maker did that part for you. (Unless you built the machine yourself, that is. In that case, best of luck.)
But adding new gear to your computer is another story. For the power user, hard drives, flash drives, cameras, printers, scanners, network cards, video cards, keyboards, monitors, game controllers, palmtop cradles, and other accessories all make life worth living. When you introduce a new piece of equipment to the PC, you must hook it up and install its driver, the software that lets a new gadget talk to the rest of the PC.