How do I hook my Wii up to me 40" Samsung HDTV if I already have a cable box/PS3/DVD player inputed? - how do you configure the ps3 on a samsung hdtv

I have a Samsung Series 550 40 "LCD HDTV. PS3/Cable I got the box / DVD player connected to your computer. I have the Wii to the picture to black and white, in conjunction with sound but not in the entrance fee adjusted so that the Wii is in color. PLEASE HELP!