It appears that the problems that plagued Vista Business are mostly gone from Windows 7 Professional. I know that I was unable to watch DVD's because I had Vista Business, so I got a bad taste in my mouth because they decided they needed to pull features from that version. It looks like they did better this time, giving you the option for DVD decoding/playing and the networking abilities needed on the Pro side. I would go with Pro if it will be used to connect with other work computers. If it is just for personal/school/internet/game use I would suggest Home Premium.
