Animation on Windows Live Movie Maker

I have now finished making the frames that will be in the animation. I have 129 png frames. The custom size of each frame is 500 by 475. I have imported all the frames into Windows live movie maker. I have readjusted all the times so now all frames are 0.1 seconds. The last 13 slides are 0.5 seconds so the message that flashes across the screen is legible. In total, the whole animation goes for approximately 18 seconds.