I Used to use this Plugin before but forgot the name. If anyone knows about it please let me know. The plugin when activated used to show a different theme only for the Admins to work on. Normal visitors would get the usual theme. Example, Theme A is on the site. You are Admin working on Theme B. Only you can see Theme B on the site so that you can make your changes. All other users are still seeing Theme A. Any Idea people? .. Thank You.
Hello Linkage It's called "Admin Theme Preview". You can download it here: http://bitbybit.wordpress.com/code/wordpress/plugins/admin-theme-preview/