I had a solution for this the other day, but I forgot to bookmark it. Let me see if I can make sense of it for you...
Open up Preferences in Address Book.
Under the "General" tab, click Exchange.
Type in your user name and password for Google Mail, and then put
"http://www.google.com/a/google.com"
in the Outlook Web Access server.
That should set you up. I think it's worked for me to this point, but I haven't been keep a keen eye on it b/c I don't use my Mac address book all that often.
Open up Preferences in Address Book.
Under the "General" tab, click Exchange.
Type in your user name and password for Google Mail, and then put
"http://www.google.com/a/google.com"
in the Outlook Web Access server.
That should set you up. I think it's worked for me to this point, but I haven't been keep a keen eye on it b/c I don't use my Mac address book all that often.