Simple iPhone Game Update

Hi, I have an existing iPhone game application and I need to make some changes. My last developer failed to finish it so I have no idea in which stadium he lefts the code. These points should be done. I have tried IPA version but it quits when I try to pick something and the background is grey. Movement is slow and controlable, so this should be done. Maybe that he made something not compatible with my iPhone 3G and I see it wrong. - train movement should be smooth, slow, controlable - when it picks some item, it shouldnt "jump" into next square but should be still smooth - the graphics of the train shouldnt blink on real device And points that are not done and needs to be: - into each level add one line of collision objects. Its nothing more than add into all level xml's few rows of simple code (you can write one and copy it into all levels). - in the left-down corner I want small button (i will send image) that will open a message box "Pause" with buttons "Exit to menu" and "Continue"...when player tap this button, it should create 50% black background below this box (to look like paused) - increase the size of the buttons for movement (look on enclosed picture, I will provide graphics) All changes must be tested on real device (not only in simulator) and the app uploaded into my developer account. Game is very simple, it doesnt have complicated code. Changes must be made in full and lite version (they are same, lite has only availible one world of five). Game should be runnable even on iPhone 3G. itunes : [login to view URL]