echPCBuilder is an AJAX(Javascript+XML) PC builder/configurator having the following features: * Lists components under matching categories * Automatically filters for compatible components based on selection * Increase or decrease the quantity of certain components * Lists the available ports, slots & connectors * Could give a warning if the component to be added is incompatible to the current build * Build price is updated dynamically * Displays the potential look of the PC build as soon as the right components are selected * Almost everything is handled by CSS classes so you're only limited by your imagination on how it is presented