OK this may sound like a weird thing to want to do. If you have a PC that has no password associated with it and you lock it all you do is click back in and you don't need to enter in a password. Well I have built a home theater PC and I have it joined to my Domain so it has to have a password because it's a domain user. I created a policy preference and associated it to the PC that will create the registry key's that will allow this pc to log in automatically. But what I'm wanting is to lock the machine and not need to enter in the password to unlock it.