I've been trying to get that to work too, but I finally got it, it should be like this:
on (release) {
loadVariablesNum("Insert.php?name="+name+"&email="+email+"&phone="+phone+"&cellphone="+cellphone+"&addr="+addr, 0, "POST");
}
remember to replace whatever variable name you have and your PHP script. Also I had some trouble using the button that Flash MX provide, it didn't work for me, so I created my own button. Hope this will helo you, I've spent around 20 hours just for that.
ciao