An adjustable positioning device used to position a work piece on a work platform is provided. The body biasing control circuit includes a lookup table for storing a plurality of indexes where each index is associated with a body voltage appropriate for an operating state of a corresponding macro block. In one class of embodiments, a single driver is used, and is centered in the back of the box so that there is an equal left-right split, although not true stereo. Methods for administering the disclosed compounds to subjects, particularly to treat hyperproliferative disorders, also are disclosed. In an illustrative embodiment, a guided programming routine can be activated by a user, which then guides a user through two or more screens that are designed to collect sufficient information from the user to generate andor update at least some of the schedule parameters of the controller.