Vista - problem with object ownership in win vista.. can any 1 help me

im using a win vista ultimate

iam the administrator of this OS

the problem is . i ave changed permissions to the object drive C:/

and denied fullcontrol to administrator user i mean myslef unknowingly,

i ave applied the settings and restarted after some time .

then i tried to change again but it says access denied even though im the
administrator.

i ave read help topic in help it says tat i can change the settings by
selecting drive and checking properties of it in security tab,

for special permissions i need to click advanced in tat tab,

further to get access i need to change the ownership of tat object ,in owner
tab.

but wen i click edit it says 'cannot open access control editor' though im
on an administrator account,

at the same window in 'current user box' i says 'Unable to display current
owner.'



plz help meeee

if iam wrong in any lang or grammer or any thing which u havent understood
plz let me kno

ill b waiting for ur repley

my E-Mail ID is nihar4all@xxxxxx