We have a 1 year old iMac and have just purchased a MBP and an iTouch. I have several questions about connecting these items. First, my external HD for Time machine is directly connected to my iMac. Is there a way to use that same HD to back up the MBP wirelessly through my wireless router? Second, is there a way to sync my iCal on my iMac with my MBP withoug having to purchase Mobile me?? These are my first questions, I have more but these are the main ones. Thanks!!