Hi Bryan, this is a NextGen gallery thing and I am not really sure what function call is equivalent to the “[nggallery id=1 template=…]” shortcode.
In the NextGen gallery documentation search for the function references for their shortcode… kind of like what I have here for the WP eStore:
On that page I have the shortcodes that you can use from a post or page followed by the equivalent PHP function calls that you can use from the template files of your themes.