Hi, I just got dish network installed. I noticed that the receiver they gave me doesn't have a digital audio out or component video out. Can I buy a different satellite receiver from ebay? I think they're also charging me $5 a month rent for the receiver (included in the package deal). I've seen receivers on ebay just like mine going for $10. If I buy a new receiver from ebay...what do I need to do so that it can receive the satellite signal? What do the cards do? Help!