This fully revised 4th edition of the best selling Computer Manual brings us right up to date with the latest technology and software. From understanding motherboard architecture to adding a new hard drive and memory, and from installing an expansion card to setting up a network, this plain English manual guides the reader through the essentials of maintaining and upgrading a home or small business PC. New topics covered include the multi-core processors, PCI Express and Blu-ray, together with a hands-on guide to installing, using and surviving Windows Vista. There's also a strong emphasis on data security.