I'm thinking of getting a Seagate 160 GB momentus for my MBP...but I have AppleCare and all that good warranty stuff? If I replace the harddrive, does it void my warranty? I know my harddrive will not be covered by apple, but seagate has a 5 year warranty... I just don't want to lose my Applecare and have found nothing on the apple site regarding this... Thanks in advance.