Can someone explain a switchover from E* to D*?

Let's say I have a Dish 500 with 2 Dishplayers. I would like to switch to 2 DirecTivo's still using the Dish 500 dish. What equipment do I need? Can I still use the Dish 500 dish to point at 119 and 101? What switches will I need to feed two DirecTivo's with dual tuners?

I am still thinking about doing this but am trying to get the details on how complicated the installation might be. If I can use the same dish, that would be cool!

Well the Dish and LNB's are certainly usable, but the switches are not. If you have the quad dish...forget it totally.

Dish 500 is designed to look at 119 and 110 (9 degrees apart) you want to look at 101 and 119 (18 degrees apart). That will be a problem.