Putting a bg pic as a tables bg.

I've put the image in the table, i'm trying to code my layout, how do I put the picture as the tables background so I can add text.

If the picture is called content_mid, what I do too put as bg.

{
background-image: url(link here to bg);
}

in the <td> add background="http://image.com/image.gif"

or what ever. or css, style="background-image: url(http://image.com/image.gif);"

Thanks before you posted ryan told me.

I've coded it put bg on the layout and it just shows the table, with white bg but with the text, and the buttons are broken images?