Hi! I am pretty much of a novice with anything technical with PC's. I am thinking about going from Win 2000 to XP. First I don't know if I should get home edition or professional. Second I don't know if I should just start all over with a PC with nothing on it or upgrade. My system only has 40GB of space and I intend to purchase an external Hard Drive for more space. Should I do that first or should I get the XP installed first. I have only 23GB of hard drive available on my system. Any suggestions?