I have it already ready done for somobody else in this forum so download this files replace your files on your server
and call for <?php MainController::Run('Vatsim', 'create_vatsim_atclivemap', '!CLIENTS:', 'ATC', ''); ?>
To kyle, the lat and lot are given bye the text file the only problem that i faced whas that the map took dynamicly the heading but the atc do not have heading so i modified your map and placed the atc.jpg icon
Vatsim.zip