How to install Optibay into non-unibody Macbook?

Hi guys, I've been looking into purchasing an Optibay (or a cheaper equivalent) and I've been searching for a guide or video which shows how to actually install it. I've seen a few videos on the installation process, but for unibody Macbook Pros, so I'm wondering if someone has a guide or knows of a video that shows the installation process for a non-unibody Macbook. If it makes any difference, I purchased my Macbook in July 2008, which I believe was the last black Macbook available.