The Internet has improved dramatically over the last few years, mainly because of increasing network bandwidth, powerful computers, software, and user acceptance. These elements are currently converging and enabling the Advanced Web for computing, collaboration and communication. The infrastructure for the Advanced Web is called "The Grid", originally derived from the "Power Grid" which provides electricity to every wall socket. A computational or data grid is a hardware and software infrastructure that provides dependable, consistent, pervasive, and inexpensive access to computational capabilities. It connects distributed computers, storage devices, mobile devices, instruments, sensors, databases, and software applications.