I have a WD 20Gb hard disk and i had 3 partitions on it. C: 7Gb, D: 7Gb and E: 6Gb. Now Im thinking of formatting my hardisk to get them NTFS formatted, esp my C:. My programs become somewhat crazy after my bro mess up my C:. So i thought if i get my C: NTFS formatted, i'll be able to restrict access rite?? Or is there any other way?? another concern will be the activation of my Win XP? Can someone advise?? Thanks!