Its quite simple if you know your way around olly, I've also done an overlay exmaple, which uses external functions to print images overtop of the tibia window, I can post the code here if anyone will find it useful but usign tibias drawing routines makes for much cleaner code plus, overlay is largely dependent on the users graphic card and relies on DirectX so the only sure way to get th image to display on every computer is to use tibias own drawing routines... when i get some time later ill make a tutuorial on this