9210i: Flash5 parameters to PHP

hi,
i´ve asked this question now in so many forums but noone has known the answer,
so there´s almost no hope left in me to get the solution of that problem. :)

I´m writing a program for the Nokia 9210i. This should be done with Flash so that i can use it for other online-programs i will program.

The Nokia 9210i should send a parameter to a PHP-Site located on a global server and get a response.
I´ve reduced this problem by writing the answer of PHP into a (temporary) txt-File (the Communicator has no problems to read txt-Files).

So there´s only the sending of parameters to PHP left.
The program uses
loadVariables("something.php", _level0, "POST");
to start the PHP-Skript and send parameters to it.
On the PC everything works without problems, on the Communicator i get the error-message: "File not found."

Can you help me to get this running?
If it doesn´t work with loadVariables(), can i use another method to send parameters to PHP?

i´m thankful for any answer
Salomon