Here are the steps to use google sync your sony ericsson phones (like k660i,w910,c510 ..any sony ericsson phone which has sync support)

1. Click 'Menu' and open the 'Organizer'.

2. Select 'Synchronization'.

3. Select 'New Account' and choose 'SyncML' as 'Account type'.

4. Enter 'Google Sync' or any name of your choice.

5. On the 'General' tab, enter the following values:

* Server address: https://m.google.com/syncml

* Username: your Google Account username, e.g. you@googlemail.com

* Password: your Google password

6. On the 'Applications' tab mark 'Contacts' only.

7. On the 'App. settings' tab select 'Contacts'.

8. For 'Database name' enter 'contacts' (lower case), leave other fields blank.

9. On the 'Advanced' tab, enter the following settings:

* Sync. interval: choose how frequently you would like to synchronize with Google.

* Allow Connection: Leave this as 'Home network', unless you also wish to synchronize while roaming internationally.

* Connection: Click on 'Connect using:' and select the Internet access point for your carrier. Leave other settings unchanged.

* Secure Connection: On

* Leave other settings unchanged.

10. Click 'Back' and select 'Yes' to save your changes.

11. Highlight your new account and press 'Start'.