OK, I just want to sync my contacts and calendar between my Mac and PC. I use iCal/Address Book on the Mac. I use Outlook 2007 on my Vista PC. Is it even worth trying? I don't want to lose everything or have a bunch of duplicates and all that. I think what I am wanting to do is very simple, right? I do like the disk space provided with MobileMe as well, and I may get an iPhone in the future. That's why I am looking at it. Thanks.