I really don't have time to answer those kind of questions any more. If you people are posting to xda developers forum, please, learn a basic things about moding devices, really... a basic operations.
For the last time, YES, if you want to change, put, remove, or anything in system/apps, you MUST have a rooted device and superuser permissions. Also, you need a Root Explorer, or similar program, and of course, set proper permissions. Please people, READ and LEARN basics about moding devices, it's not that hard. A really good developers are already leaving and abandoning projects lately because of those kind of things, and same questions over and over again.
Sorry If I'm a bit harsh, no offense...
listen one simple yes or no would have been more useful,anyway thanks and sorry