Sure, just make the function return an array!
code:
function SendInfo() {
var arrayInfo = SetInfo();
Messenger.MyName = arrayInfo[0];
Messenger.MyPersonalMessage = arrayInfo[1];
}
function SetInfo() {
var returns = new Array();
returns[0] = "Stefan Leroux";
returns[1] = "Scripting God (LOL)";
return returns;
}