I have the same problem. I have been searching all over the web for a resolution. I can only tell you this from what I have gathered so far. I am assuming that you have a notebook computer like I do, and this issue seems to be ralted to mobile computers. This option is grayed out as system standby / hibernate drains the battery, so upon installing XP, it sensed that and now grayes out this feature. Strange though, since I have XP Pro and Win 2000 in a dual boot on the same notebook, and if I boot to my win 2000, the options are present, yet they are not in XP

I will keep searching to find out if this can be fixed.
~A~