diff --git a/00-custom-app/CustomApp.as b/00-custom-03d1-datagrid/CustomApp.as
similarity index 100%
rename from 00-custom-app/CustomApp.as
rename to 00-custom-03d1-datagrid/CustomApp.as
diff --git a/00-custom-app/Snarf.mxml b/00-custom-03d1-datagrid/Snarf.mxml
similarity index 100%
rename from 00-custom-app/Snarf.mxml
rename to 00-custom-03d1-datagrid/Snarf.mxml
diff --git a/03d4-tilelist/TileListExample.mxml b/03d4-tilelist/TileListExample.mxml
new file mode 100644
index 0000000..8b006b3
--- /dev/null
+++ b/03d4-tilelist/TileListExample.mxml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
+    backgroundColor="#FFFFFF"
+    backgroundAlpha="0"
+    horizontalAlign="left"
+    verticalGap="15" horizontalGap="15">
+
+      <mx:Script>
+        <![CDATA[
+            import mx.collections.ArrayCollection;
+            import mx.rpc.events.ResultEvent;
+            import mx.events.ListEvent;
+
+            [Bindable]
+            private var photoFeed:ArrayCollection = new ArrayCollection();
+
+            private function requestPhotos():void {
+                var params:Object = new Object();
+                params.format = 'rss_200_enc';
+                params.tags = searchTerms.text;
+                photoService.send(params);
+            }
+
+            private function photoHandler(event:ResultEvent):void {
+                photoFeed = event.result.rss.channel.item as ArrayCollection;
+            }
+
+            //show text message when user selects image
+            private function showMessage(event:Event):void {
+                message.text = "You selected: " +
+                    event.currentTarget.selectedItem.title + "\nUploaded by: " +
+                    event.currentTarget.selectedItem.credit;
+            }
+         ]]>
+    </mx:Script>
+
+    <!-- photo service -->
+     <mx:HTTPService id="photoService"
+        url="http://api.flickr.com/services/feeds/photos_public.gne"
+        result="photoHandler(event)" />
+
+    <!-- search -->
+    <mx:Form>
+        <mx:FormItem label="Search Term"
+            direction="horizontal">
+            <mx:TextInput id="searchTerms" />
+            <mx:Button label="Search"
+                click="requestPhotos()" />
+        </mx:FormItem>
+    </mx:Form>
+
+    <!-- result, data is passed to the itemRenderer by Flex through the data property -->
+    <mx:TileList id="mylist"
+        labelField="thumbnail"
+        dataProvider="{photoFeed}"
+        width="600" height="200"
+        paddingTop="25" left="5"
+        itemClick="showMessage(event)">
+        <mx:itemRenderer>
+            <mx:Component>
+                <mx:VBox width="125" height="125"
+                    paddingRight="5" paddingLeft="5"
+                    horizontalAlign="center">
+                    <mx:Image
+                        height="75" width="75"
+                        source="{data.thumbnail.url}"/>
+                </mx:VBox>
+            </mx:Component>
+        </mx:itemRenderer>
+    </mx:TileList>
+
+    <mx:Text id="message"
+        paddingTop="20" />
+
+</mx:Application>