I am ready to upgrade to either Win2k or XP...I get both OS's for the same price (full install versions, not upgrades). When I upgrade, I save my data on CD, reformat the harddrive(s) and then do a fresh install. What issues will I face with XP registration stuff? I do change hardware once every 4-6 months or so (upgrade video card or sound card type stuff). Can I install on more than one machine. I have 2 laptops and 2 boxes all at home networked, router to the outside world. What about the NTFS file systems...I use Win2k at work, will my files here at home be compatible with my box at work? Can I set the file system to FAT32? What is the minimum hardware that can 'Realistically' run XP. My wife has a IBM i1400 series laptop @ 450Mhz with 128Mgs ram, will this be capable of running XP? I don't game at all...mostly Adobe/ Powerpoint stuff for work and surfing/paying bills online. Thanks in advance guys...any info will be helpful... Tim K.