1. A system for defining an augmented reality capability for a portable computer, said system comprising: a) a portable camera comprising a display and having the ability to show the current real-world environment via the display; b) a portable computer comprising a computer processor and having the ability to show images, drawings, and models via the display; c) a software program executed by said computer processor for managing the display of said images, drawings, and models via the display; d) a set of controls whereby the user can interact with the software program; e) a plurality of digital marker images that represent a specific preexisting, captured view of a particular location; and f) digital artifacts comprising a plurality of digital artifacts that are associated with a specific view of a particular location; wherein the computer processor, via execution of the software program: i) receives from a user of the system a request for a particular digital marker image from the plurality of digital marker images; ii) displays the requested digital marker image superimposed on at least a portion of a view of a current real-world environment displayed by the portable camera; iii) receives from the user of the system an indication that the requested digital marker image and the current real-world environment as displayed by the portable camera are aligned; iv) marks the location of the current real-world environment upon the user's indication that the requested digital marker image and the view of the current real-world environment are aligned; v) displays a digital artifact associated with the marked location simultaneously with a view of the current real-world environment; and vi) displays an adjusted digital artifact in response to an adjustment by the user of the view of the current real-world environment as displayed by the portable camera.