Ok, so you will want to have an switch statement based on the post value of the drop down list. Basically you'd want to set up a switch statement:
control-structures.switch.php
switch((isset($_POST["select"]))?$_POST["select"]:"") {
case "AL":
$RecipientEmail = "leifbaker@nj.rr.com";include("WA_Universal_Email/WAUE_forms_1.php");
break;
}
You would want a different case for each of the states.