Please edit your thread title and post to lower case.
second, is ti a protected file you copied onto the phone, or was it on the phone originally? If it was on the phone originally, then you cannot delete it, it;s like a system file on Windows, it doesn't need all of the, but they're not deletable
actually its possible to remove the protected files... but please search in other thread about this. ive posted a reply on another thread. next time read other threads before making one. secondly edit your thread title to lower case.