Bud I'd probably hit a local independent audio video retailer that also does installations and talk to them, they should be more than glad to show you the various connectors to use and how to use them. It may cost a little more to buy from them but the knowledge and help gained in the process is something you'll probably never get from the chain stores.

I had a lot of fun doing the planning and installs in our room, it was very enjoyable for me.

Rick
Our Room

smile