Make a Video - Web Optimized

I need a video for the intro to a web site. 8 to 12 Seconds long. The attached sample is just a demo using stills. We now have 5 video clips - the words " Each word will last for 1 to YOUR", "LIFE", "STARTS", "NOW", "Lets Go" !flash over each clip.1.5 seconds. Ending with the last words Lets Go! . You will use the last 1.5 to 2 seconds of each clip. I have done a mock up sample in Power Power attached but I used stills - I will give you videos to edit together. The words YOUR", "LIFE", "STARTS", "NOW", "Lets Go" !flash over each clip - the video will run in the banner section of a wed page. See another example at http://&[login to view URL] or [login to view URL] you have to click on the - store and it will show up. it needs to load and play quick. More work if you get this one right.