kuk, es gibt kein problem 
cheater, I have 3 or 4 LCDs in my parts box and wonder if its worth testing the contrast and backlight circuits on them using my arduino. If you want to modify the transistor driver code so it works with the arduino's timers running on a 16mhz clock then I would be happy to test this on my breadboard.
I don't need the code for the LCD data for this test but would be happy to look at that if it would help you.