Once you hook up your PC to a network, it's not a personal computer anymore. You are now part of a network of computers. You don't need to have a PhD to understand the benefits of networking. In fact, you learned everything you need to know in kindergarten: Networks are all about sharing. Specifically, networks are about sharing files, resources, and programs. Do you share information by copying files to a floppy disk and passing on the disk? Do you...