Hi, I am building a mac pro right now on Apples site for my dad. He is going to be using it for mainly advertising and some other stuff. Here is what I have so far. Now I am asking because I like both PC's and Mac's but still at loss for the video card. I mean, the first thing that comes to mind right now for me is 8800GT over a 2600XT since that is what I use for gaming. But since he won't be gaming on it I am wondering if would be better to get a 2600XT over an 8800GT. He is going to be using a 23" Cinema Display so it won't be as demanding on the Video Card as larger displays are. Also I am wondering about the RAM. First, should I stick with the ECC RAM? I am wondering since it it very expensive, but there must be a reason why. Also is 2 gb's fine or should I go for 4 gb's.