Hi, I'm new to computer building, but decided to try building a computer. I purchased a copy of XP, but it's an OEM copy. I didn't realize what this was at the time, but now understand why I had to purchase hardware with the copy. It has the cd and an identification number, but that's all. I'm building the computer and the operating system is for a new computer, but I'm not a computer manufacturer or anything. Is this legal, ethical, etc?