When you are ready to export your Captivate, you need to either export it as a multipart swf, or if you are using Captivate 6 or newer, you can export it in HTML5. When you load it into Udutu, you need to upload it into a basic screen. There are 2 different templates that work best, the media only or rich text only. The rich text only will give you more flexibility in sizing your Captivate, whereas the media only will re-size it to 900×515.