Off the top of my head, you might need to upgrade to DishPro and use a pair of DP34's in a cascade connection.
Considering how close the DPP44 might be to release, you might want to wait for that so that you'd have the option of adding a 4th satellite somewhere down the road.
As for D* switches, they're a much simpler device - maybe nothing more than a splitter - due to the D* technology.