1. A system architecture for computers, including personal computers, to function within a network of computers, comprising: at least one of said computers including at least two microprocessors having a connection with said network of computers; a firewall for said personal computers to limit access by said network to only a portion of hardware, software, firmware, and other components of said personal computers, wherein: said firewall denies access by said network to at least a one of said microprocessors, which includes means for functioning as a master microprocessor to initiate and control execution of a computer processing operation shared with at least one other microprocessor, including means for functioning as a slave microprocessor, and said firewall permitting access by said network to said slave microprocessor.