I need some help.

[s2dandy]

Ok,

Here is what I have setup, I have a 60 gig PS3, a 37inch Vizio, and my surround sound set is an RCA 1000W 5.1 Home Theater System, audio system is not the greatest but, I do run on a budget. My question and problem is that on some of the Blu-ray movies when I watch them will have a grain look in the black and darker areas of the movie and you can notice it in some of the skin tones, and other colors, not all of the blu-ray movies do this. I need to know if I am doing something wrong with my hookup, which I am running HDMI from the PS3 to the TV and home theater system to get both audio and video. Is there something I need to change in the tv setup, or is it my TV?

Thanks, a whole bunch in advance.

Shannon