System wide ACL reset?

Hey, I wonder if someone could point me in the direction of some sort of ACL reset to default script?

I messed around with the ACLs and now am having some serious errors. I had to grant the NT AUTHORITY\SYSTEM full control of the entire system and I don't feel very comfortable with that considering how easy it is to gain control of the SYSTEM account.

Thanks

Nevermind ... could someone delete this please

Thanks