[seamus]

Actually managed to get OTA syncing with a combination of Google Calendar Sync and Google Mobile Sync (beta just came out). After a lot of heartache and many hours I now have full OTA sync for my Windows Live Account and view my calendars, contacts and emails perfectly synced between Outlook on my PC, the Diamond and on the web via Google.

Here's the steps I took that finally worked.
1. Set up Outlook to look at the Windows Live Account as the default.
2. Download Google Calendar sync and it will then "point" to the Live Calendar and sync with it.
3. Hard Reset your mobile phone.

4. Run ActiveSync and follow the instructions on the Google Mobile Sync for Windows Mobile web page... sort of... the screen instructions are out of order for ActiveSync 4.5 and you need to ensure the domain entry box stays Empty. You also should only "tic" calendar to sync.

4. Phone should now sync calendar items.

5. Run Windows Live on Diamond and enter hotmail or live account and password and accept all the default options. Phone will set up a mail account, synchronize it and import all your Windows Live contacts.

You are done. Complet OTA syncing of your most important data with Outlook. Don't ask me why MS doesn't include Calendar syncing with contacts and email as part of Mobile Live. Would have made my life so much simpler.