Hello!
I can do this task for you. Only I use PowerPoint 2007 on my computer, if it's not a problem for you. I can use Windows Live Movie Maker, but also I can add some visual effects in the final video using Adobe After Effects.
I can do the job in 2-3 days and there is no limitations on how many changes you may ask me to do in the final video if you need some.
Best regards,
Gleb