T-minus is a standard module (aka Plug-in) for DNN.   Login as Host and goto Module Definitions and click on the Install new module link at the bottom of the page.  When prompted, browse to the T-Minuis zip file and click on Install new Module  to Load.

T-Minus will now be install and available as module like any of the pre-existing modules -- Just select T-minus from the Module drop list.

Hope this helps
Paul.