Flash & php

I’ve made a simple form in flash that sends it’s values to a PHP file on an other server. The problem is that when I upload this swf on my own server it doesn’t work anymore (it worked fine when I tested the movie in Flash), there is nothing wrong with the PHP 'cause I made the same form in HTML and that worked (When I put the swf on the same host as the PHP it works also, but there are too much ads). Flash disables automaticly loading php files from an other server, does anyone know a trick or something to make this works?

Greetz Jakke