I am trying to play 720p x264 video files on my computer, and they are always very choppy. Right now, I'm connected to my HDTV with a VGA cable. Here are my system requirements, and I'm hoping that someone can give me some advice on what I might need to upgrade to get smooth playback. -2.66GHz Processor -768MB RAM (400MHz) -Intel 82865G 128MB Video Card I was thinking of upgrading my RAM, but now I'm thinking that getting a new video card might be better. I'm looking to spend no more than $200. Any advice is appreciated!