Ultimate PlayRoom background....

[VintageJetBoats]

Hi guys,
Check out my site http://www.vintagejetboats.com/forum
You will see that Shortie has helped me a ton with the layout. I'd like to make the background behind the text transparent like on my main page http://www.vintagejetboats.com so that you can see the image behind it better.
Anyone know the fix for that?

Thanks,
David

[VintageJetBoats]

Update...
When you visit the site you will see at the very bottom of the page that that portion is transparent. I was able to do that by finding that background image and changing it's fill in PhotoShop.
I have not been able to do that with the background images above it that look identical to it. I am puzzled by this part.

[Shortie]

Try playing with the windowsbg-01a.png and in the content-section tag make the background colour transparent

[VintageJetBoats]

I made windowsbg-01a.png transparent, that's how I got that look at the very bottom of the page. I thought it was the same image above it as well.
Can you point to where the content section tag is? Is that a css file?