I just wanted to share this free service: www.plaxo.com I have been playing with this service that will allow you to sync Yahoo, Google, Mac (iCal) (Address Book), PC (outlook) and then the Iphone via iTunes. Has a client that loads that keeps everthing in sync. I subcribed to their pay service (50.00 a year) for all the bells and whistles. I've been looking since last Friday for a good solution. This one seems to work real well.