Cross domain sendAndLoad via cross domain script

My swf works fine when previewed locally but because of flash cross domain issues (link below) doesn’t work live.

http://kb2.adobe.com/cps/142/tn_14213.html#main_main_policy

I’ve used a 'crossbrowser.php’ file to .load in xml but am not having success with the sendAndLoad command.

http://xmlrpcflash.mattism.com/proxy_info.php

Can anyone help me please!

Thanks for your thoughts / any help.

Lex