i took around 400 induvidual shots of iso800 at 20 seconds exposure one after another and then joined them together using a software toavi that converts jpegs to avi.u can also join the images using windows movie maker but you wont get a movie of size 700mb.the maximum u will get is around 170 mb.
i have heard that the windows vista allows u to make a high definition 720p video by joining jpegs but hvae not confirmed it since i dont have vista