I am trying to figure out how to change (or customize) the in-call screen using winterboard. Every where I've looked, there is no answer but I know there is, just have to find out how to do it. So if anyone could please help me out and tell me how to change it either manually (artwork file) or using winterboard would be greatly appreciated. P.S. If I have to use the .artwork file, please give its location, thanks.