whole home w/internet question - DirecTV DVR

For whole home w/internet question, relating to DirecTV DVRs and receivers. I just got my system installed. I had to remove a connection from my router to make room for my VOD connection via deca. By the way I have HR-24 and 2 H-24's. I was wondering if I could use the ethernet connection on the boxes like a switch connection for other internet using devices? Will that cause problems w/ my system? Also, my VOD keeps saying I need to subscribe even though I have premier pkg.