Noob

Ok, Simple question.

I have a Local User Account created on a Vista Business computer. This
Vista system is on our Domain. I need to have this local account NOT
use the Domain password policies.

I am NOT able to go in and edit or change these with the Local
Security Policy (They are grayed out).
I am using a Domain Admin account.

How do I change this?

All I really want to do is remove these for this local account