allow cart customer discount discounts entire items options order orders product products setup

Hey guys, I'm trying to make it if a customer orders two specific items they get 20% off the entire order. I can't figure out how to achieve this for two specific products instead of all products... can anyone tell me how to do this?

E-junkie discounts cannot be setup in such a way to allow a discount if two different products are in the cart. The only options we have are for entire cart or product specific discounts.