Thanks I'll check out that thread. I did a search and don't know why I didn't run across it.
Oh, and regarding the airflow, you are absolutely right. BUT the computer I am using for my MAME cab is not exactly top of the line, and it is pretty old. The thing runs pretty hot already and there is no duct work to channel cool to specific points like in current cases. I should have been more specific in my original post.