getting crap figured out wrt compiling components, including with mxmlc

03d1-datagrid/DataGridExample.mxml

@@ -13,11 +13,13 @@
             import mx.rpc.events.FaultEvent;
             import mx.controls.Alert;
 
+            import RequestParams;
+
             [Bindable]
             private var photoFeed:ArrayCollection;
 
             private function requestPhotos():void {
-                var params:Object = new Object();
+                var params:RequestParams = new RequestParams();
                 params.format = 'rss_200_enc';
                 params.tags = searchTerms.text;
                 photoService.send(params);