Layout problem

Hi folks,
Could you please have a look at this page: www.elandesigndev.co.nz/sapphire/index.php/ball-gowns/checkout
You see near the bottom, the shopping cart part is spreading over to the RH column and I can't figure out to contain it all in the centre content area.
Also the page title at the top, I seem to have 2 headings! For the life of me I can't find where to edit this, please help.
Thanks

First of al, you've got errors on your page.

9 times that my browser can't find this: www.elandesigndev.co.nz/sapphire/safari-...es/float/green-3.png
1 time this: www.elandesigndev.co.nz/sapphire/safari-...es/float/green-2.png
And another time this: www.elandesigndev.co.nz/sapphire/safari-...ges/float/grey-0.png

And in your class .page_bg
An width of 1500px is way to big, or you must use it for 1 perticalier screen. else use around the 1200 px max for max compabillitie...

And try to use as many margin auto's as possible. Because that helps centering it.

If you've done this, and it is still not right, then i will look further