While i'm sure you two could intelligently debate the use of flash for the next couple dozen posts, how about we get back to the actual question, and you guys can take it to a seperate thread?
To the Flash people: Can someone verify the flash code above will work as intended?
To the OP: You can test whether the variables are being passed correctly by putting the following at the top of your PHP page (inside the PHP tags)
<?php file_put_contents('testvars',print_r($_POST,true)); ?>
Run your flash page, then look for a file called 'testvars' in the directory with the PHP file. Open that up, and lets see what's inside.