Passing variables to PHP script

Hello,

I have a website up and includes two textboxes and a button. It is basically a front-end system to log into a 3rd parties PHP script. I have uploaded the flash source to [HTML]http://www.allcheck.biz/flash.7z[/HTML].

I know that the two variables the PHP script is looking for is called userName and password. I attempted to use the sendAndLoad(); function, but it won't even leave the flash page.

Any help is greatly appreciated!!