Ok I finally signed up the Mobile Me trial to see how it worked. My set up is an iphone3G, Vista Laptop (Mostly a windows user here due to work) and a Mac Mini. I use my Mac Mini's iCal quite a bit and have multiple calendars set up with multiple ToDo (Events). Not quite pleased with how it sorts and sets up ToDo's, but I am making do. ICal stuff works fairly well. I had no sync set up with anything. So I set up the Mobile Me Trial. iphone immediatley said it would wipe the phone's calendar data (why not give me a "merge" option) since I enter stuff on my phone whereever I am. Ok, no big deal, I will deal with it. iCal is terribly slow with IE7. Just use firefox or safari on Windows to make it faster. My issues that maybe someone can shed some light on: 1. I enter an appointment on my iphone. Nothing has shown up on my Mobile Me calendar. What causes the Sync? I set up the Vista and Mini to sync automattically. The iphone is set to PUSH, but I do not see any options for sync of calendar. 2. Does Mobile Me show your Todo or Events from iCal? The ical calendar's all showed up, but no ToDos. 3. Which calendar events are going to show up on my iphone? I have a variety of calendars on my iCal (Work, Home, Son, Projects, Birthdays, etc). 4. Will it show which calendar event the item is associated with on my iphone? I color code them in iCal (ie Work Calendar todo's are green, personal are blue). 5. My Vista laptop wants to only sync the calendar with Outlook. Can I have it use Windows Calendar? I do not use Outlook on my laptop. Well so far thats my first day experience and questions. Any help is appreciated.