The Virtual Salesman is the combination of a virtual mannequin, which is a Plexiglass or any transparent material cut-out, that has a special projection foil stuck on the back which turns it into hi-resolution projection screen. The invention also relates to the corresponding treatment process. Moreover, the skewer assembly covers the access holes to the internal hardware of the rack mount when inserted therein. A reservoir for holding the infusion medium may be part of the disposable portion, and may be supported by the disposable housing.