Virtual page and gantry

[e...@ravers.it]

hi,
i'm trying to develp a plug for a friend that use gantry as template but i need to create some virtual page (dynamically create page not custom post) useing parse_request hook but when i call get_header and get_footer) with gantry doesnt work work .
i'm doing something like the code abose inside the hooked method

                get_header();
                //CODE to display the page
                get_sidebar();
                get_footer();

with a normal themplate work

thks in advance