@VPrime: Good points, while I won't change the back buttons text, what about a arrow styled button that shows that it just goes "one screen" back in the hierarchy?

@Rondidon: Not possible, it uses a few 4.0 only classes and while they can be replaced, I also rely heavily on a new C language feature called blocks and some class functions that make use of them which was introduced in iOS 4.0. Sorry.