My 'home base iTunes' for my iPhone 4 is my iMac at home. All my music, existing video, etc. are on here. I am planning on bringing and shooting some video while on vacation. I only have the 16GB so I am thinking I will need to transfer a day's worth of video to a laptop I intend on bringing on the trip. Will I be able to 'empty' the iPhone's daily videos to iTunes on this laptop without screwing up anything related to my home iMac/iTunes/iPhone setups? Is there any additional steps I need to perform on the laptop before I go? Thanks for your help/advice!!