When I install my hd dvr do i need two b band converters? I just bought a
HR22 reviever? Thanks Joe

If you are using a standard 5 LNB dish, yes. If you have an SWM set up, you need none.

why is my component picture better than my hdmi one with the hd dvr?

No idea, you may want to start a new thread instead of hijacking one that doesn't pertain to your question and provide some more details such as the makes and models of your equipment, any settings, etc.

Welcome to the forum, lots of great info here, for Directv related questions I also highly recommend sister site dbstalk.com