hI when i connect to one laptop with windows xp i automatically get a window where it gives me an options to upload pic to my pc, however when i connect to the laptop with windows 7 on it , it connects and after i select option 'pc' on the camera screen , i never get the window on my pc with an option to upload the pics,the camera sceen goes black. Is there a compatablity issue with windows 7 or am i missing any drivers.? Please advice.thanks