How do I enable a directv rc82v remote control an onkyo tx-nr676 av receiver?

I don't think that remote can control an AV Receiver.

Thanks ... will try.

litzdog911 as Ludwick577 instructed it worked... and very well at that.  So thank you again sir.

The DirecTV RC82V can in fact control your AV Receiver. In the remote menu settings select Manual Settings. Enter model of receiver. For example my receiver is a Yamaha RX-V667. It will automatically set the codes.