On my Windows Vista partition in my mobileme preferences I have the option to sync calendars, however it is greyed out. Can anyone venture to guess why? I figured I had somehow configured my Windows Calendar wrong (then again I have never once opened windows calendar). But my Contacts and Email synced just fine and I had never opened either of those!
Dont know if this will help but this is from the online MobileMe help file (available once you log into MM).
"Setting up MobileMe sync on a Windows computer
Support
If you have a paid MobileMe subscription, you can use Microsoft Windows XP or Vista to synchronize your contacts and calendars between your computers hard disk and MobileMe. You can also synchronize contacts, bookmarks, and calendars across all your Windows computers.
After youve installed the MobileMe control panel (included with iTunes version 7.7) and have entered your MobileMe member name and password, follow these instructions to set up MobileMe synchronization.
To synchronize your information using Windows XP or Vista:
From the Start menu, open Control Panels and click MobileMe.
Make sure your MobileMe member name and password are entered correctly, and then click Sync.
Select the Synchronize with MobileMe checkbox and then choose Automatic or Manually from the pop-up menu. You can also choose Every Hour, Every Day, or Every Week.
Select the checkboxes for the items you want to synchronize.
To be notified when the information on your computer changes, choose an item from the pop-up menu.
Click the Sync Now button.
Enter the same synchronization settings on all the computers you want to keep synchronized.
MobileMe synchronization supports the following Windows applications for each information type:
Contacts: Outlook 2003, Outlook 2007, XP Windows Address Book, and Vista Address Book
Bookmarks: Internet Explorer 6, Internet Explorer 7, and Safari
Calendars: Outlook 2003 and Outlook 2007"
