Should all speakers be at the same volume level? If not what levels should each of them be at?

If you have a receiver with a test tone, you should use the test tone to make all of the speakers the same volume from your listening position. An SPL meter (Radioshack sells them) will help you do this with more accuracy, but using your ears and the test tone is a good place to start.

This has been covered many many many many times in this forum -- do a search for more info.

In fact there is a thread on the same page as this one covering this topic! http://www.dvdtalk.com/forum/showthr...threadid=79728

I set them all the same but I have my center just a couple of ticks higher so the dialogue cuts through.