Can I Install A Blu Ray Disc Player To A Digital Projector And Still Get The Same Quality Picture As An Hd Tv?

Can I Have A Blu Ray Disc And A Surround Sound All Hooked To The Same System?

thinking of getting a blu ray disc player, I already have a surround sound and dvd player system can I hook up the blu ray disc player to it or to my lcd tv? or do I have to take off the surround/dvd system?
would the blu ray just hook to the tv and the surround? HELP