How do I change the text shown in GooglePlayServicesUtil.getErrorDialog()?

I am trying to follow the gcm tutorial from Googles docs. They say to call this method if Play Services are out of date:

 GooglePlayServicesUtil.getErrorDialog(resultCode, activity, 9000).show();

That's fine, but it puts a dialog that says "This app won't run unless you update Google Play Services" with an "Update" button. I want to change the title and the message text. My users CAN skip the update, and the app will still run. They just won't get push notifications. How do I change the message of the dialog?

I would like to do something like:

Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog(resultCode, activity, 9000);
errorDialog.setTitle("out of date");
errorDialog.setMessage("Please update or push notifications won't work. Thank you");
errorDialog.show();