Can't help you with the design but here's how to change the slider text.
In Cyberduck, go to:
1) System/Library/CoreServices/SpringBoard.app/English.lproj. You should see the .strings file called SpringBoard here.
2) Drag (copy) "SpringBoard.strings" to the desktop and rename the ".strings" to ".plist"
3) Download a text editor called Pref Setter (Google, it's free)
4) Launch Pref Setter.
5) Search and change the name
slide to unlock under "Value" column to whaterver (but make sure it's not too long).
6) Quit Pref Setter and save.
7) Change the ".plist" back to "strings"
8) Drag the modified "SpringBoard.strings" replacing the "SpringBoard.strings" in Cyberduck.
9) Restart iPhone
should work
