If you're buying a new computer, Windows XP is the operating system you want. Personally, I went with Windows XP Home Edition. XP Professional has some extra features that I don't need. And it costs $100 more. If you are thinking of using dual monitors or dual processors, then you want Windows XP Professional. (You don't get those features in the Home Edition.) Those would be the two things you might be likely to want if you really want a "power graphics computer." The best thing I can say about computer hardware is: "Stick with major brand names." (For example: I will always buy a sound card from Creative Labs, maker of the SoundBlaster cards. I stay away from brands like "HiValue," etc.) You want a company that has been around for awhile and is likely to stay around for awhile. It's not always easy to make that kind of determination. I've heard many people buying great graphics cards only to see the company go out of business or drop that particular product. You would likely want to buy a computer from a company that allows you to pick who makes the parts, or at least tells you who makes the parts. Some good companies, such as Dell, offer alternatives to their basic package. Personally, I've never bought a "manufactured computer off a shelf." I've always built my own from parts. It's more rewarding sometimes. And I know what I have. On the other hand, if something goes wrong. I have to rely on myself for the fix.