Power Options

Just loaded XP Pro a few months back. Everything has
been working well, but now my Power Options don't want to
work.

I select a power setting and then select Save As... The
only scheme I have is Home/Office Desk. I click OK but
get the message, "Indicates two revision levels are
incompatible".

So I go back to Save As... and enter a new name (like
Laptop). It seems to save the info, but when I call
Power Options back up, everything is reset and Laptop is
no where to be found.

HELP

im using windows XP professional.i intentionally deleted
the power schemes in my power options, under the control
panel... now, i cannot anymore add new schemes... under
the features(e.g. turn off monitor, turn of hardisk)it
has been disabled, i cannot anymore select a duration for
use such particular feature... how can i fix this..?? but
when i add another user account, power options turns back
to normal.. does windows XP store this settings in a
file?? what is this file.??(if any) thanks a lot..

I cannot get the opwer options such as turn off display
or hard drive to function. Any ideas? the system uses XP
home