Jan 212011
If you’re a Google Apps domain admin, you can turn on Contacts service for a Google Apps domain by following the steps below:
1. Sign in to your Google Apps control panel at http://www.google.com/a/[yourdomainname]
2. Click the ‘Add more services’ link next to ‘Service settings.’
3. Under the ‘Google services’ section, find Contacts and click the ‘Add it now’ button.