I installed the Brico Vista Pack and it worked fine. A couple months later I decided to change my theme. Under Properties>Appearance, Windows and Buttons: is locked. I remember that happening when I installed it before and I did a system restore. Now, my restore points don't date back to before the transformation pack. I wan to change my theme, so I click a .msstyle under the Resources\Themes folder and it worked fine until I rebooted, then the vista theme came back. How can I undo this lock and change my theme freely again after this misfortune Brico Packs have brought me.