Trouble with OBBs and mouse controlled RTS view

I’m trying to create a skeletal cube around a player, connecting the eight points that surround the model. I assume OBBMaxs and OBBMins would be the function to use, but I don’t know how I should be using them.

I can get them to draw a square, but I need six squares together to for a cube.

The second part of the help request is fairly self explanitory, I know how to make a RTS view that is controlled by the keyboard, but what would I need to use to have it mouse controlled?