Hello & Thanks :
And more importantly , I am looking for the smallest Desktop footprint possible , to run these programs in . Any advice/direction you can give me will be greatly appreciated .
PHP is a great language for the web, not so much for GTK. Php-Gtk is under developed and may not even be active anymore. If you are looking for cross platform solutions, Java is the way to go. Though I'm not a fan of its security issues as of late.