You treat a photo in Vegas the same way you do a piece of video. Not sure why you think you need this "video recorder". I think you are completely misunderstanding this and making it far more complicated than it really is.
That still photo - It's on your computer right? Import that still photo into Vegas. Place it onto the timeline. Drag the event to the length you want.
sweetpea, visit the www.vasst.com/login.htm page, click on the Tutorials button, go to the VASST tutorials. You'll find a tutorial there for Pan/Crop. This will show you what to do.