Need help with Panasonic BMP-BD30 Hook Up

[spitzerone]

Here's hoping someone out there will have an answer for this problem. BTW I am a novice who has been banging my head try to make this work.

Here are the components in the system I am trying to link together:

Bose Acoustimass 10 III speaker system
Panasonic TH-50PZ700U
Yamaha HTR-5250 AV receiver
Direct TV Receiver HR20-700

I want to be able to play my Blu Ray and TV through the receiver if possible. This receiver has no HDMI in or output. It is about 7 to 8 years old but lightly used. I am trying to make it all come together. Am I attempting the impossible or can you save me from having to bu a new receiver?

I believe I have all the cables. I am located in the US if that matters.