Ok I would like to purchase this as a T.V. http://www.newegg.com/Product/Product.aspx?Item=N82E16889234001 it is labeled a t.v. but it doesnt come wiht a t.v. tuner(not exactly sure what that means lol). So lets say if I had no computer... how would I use it as a t.v.? because I want to watch cable t.v. on it and play xbox360 and ps3 on.