lordakoa said:

I am using NextGen Gallery for my header as a slideshow. Problem is I only want the subscribed users to see the photos on it. I want to give the folks that havent logged in a different header or the default header.jpg that my Iphone users get now. Any tips?

If that's all you need, some custom code in your template's header.php should do the job:

global $current_user;
if ( $current_user->ID ) {
  // your subscriber display code
} else {
  // your non-subscriber display code
}