modify Windows XP ACLs

Hi, I messed up my ACLs because I can't seem to leave anything alone and I was wondering if any of these CDs include utilities that would let me change permissions for files and directories under Windows XP Home.
Specifically I think I set the permissions for everything so that only one user has full access and the system doesn't have any access and I think that is why my computer will not boot.
I know, I'm an idiot.
Specifically I think I set the permissions for everything so that only one user has full access and the system doesn't have any access and I think that is why my computer will not boot.
I know, I'm an idiot.