silly me, I spoke too soon, I now get this error
"Access of undefined property resourcemanager"
<fx:Script>
<![CDATA[
import spark.events.IndexChangeEvent;
import mx.controls.Alert;
import mx.resources.ResourceManager;
import mx.resources.IResourceManager;
protected function combobox_changeHandler(event:IndexChangeEvent):void
{
var temp:*=ComboBox(event.target).selectedItem;
Alert.show("You selected " + temp);
if (ComboBox(event.target).selectedItem = "English") {
resourcemanager.localeChain = ['en_US']; ==> ERROR
}else{
resourcemanager.localeChain = ['fr_FR']; ==> ERROR
}
}
]]>
</fx:Script>