Providing auctioning and bidding services by means of a global computer network; providing services for issuing and responding to bid packages by means of a global computer network; computerized on-line ordering services featuring construction equipment; document reproduction; computerized database management; providing customer relationship management of others; mail order catalog services featuring construction equipment; estimating contract work; procurement, namely purchasing construction equipment and materials for others via a global computer network; computerized tracking and tracing of construction packages; providing an electronic marketplace for the buyers and sellers of building construction products, printing, plotting and scanning devices, paper, inks, printer and toner cartridges, and software utilities, by means of a global computer network