I'm debating upgrading from Win2000Pro to WinXP Pro. (athalon 1800 system, 512RAM, used for a lot of testing plus net & email use) Are there any actual benefits in doing this, or is the change really only a cosmetic thing? I've heard that XP Pro is a very strong OS, but then again Win2000 has been reliable to date. Also read somewhere that XP Pro has a lot of overheads, such as checking to see if it is registered every six seconds - is this for real, or just a rumor? If there are benefits, would anyone care to offer tips, advice, etc before I leap into this? I am running the Doucor XactCopy system, so if it all goes really bad I can restore from the backup drive. Thanks in advance!