Sorry: This is the correct version!
Below are the comma rules I use with my 8th grade English class. It is a flash video, so you might have to update Flash on your computer.
If you can master comma usage, you are probably most of the way to writing grammatically correct sentences because misuse (including omitting and overuse) of commas is the most common mistake in writing. The video includes a comma test that will help you assess how well you understand comma usage.