WD-52525 too much green and picture is not clear...what can i do to fix it

My brother sold me his WD-52525 to me several weeks ago. I think I messed up something in the TV. You see I had to pick the tv up in New Mexico and bring it to California. At any rate, here's my problem: The picture seems way blurry and not clear at all. I am also seeing a lot of green in the yellow or gold colors while the TV is on. No matter what I do to try and tune the color in the green never goes away and the blurriness never goes away. I am thinking it may be the comcast box; since, it is not the HD box. The picture itself is a bit crooked. Can someone help me with the green and blur problem?