Moving text to below picture

Trying to tow the line and use WordPress more than html to sort this page out, how can I get the text on the right to go below the pictures.
http://www.windmillhillvillage.co.uk/r65
The pictures of the dirty and clean exhaust has a space filler next to it.
Now the piccy and the space filler are both 400 wide and the big piccy is 900 wide.
I guess the style sheet is causing this, but not sure.
I assume as the body is more than 800 wide, it is making the text do this.
How can I override it and force the two bits of text on the right to go above the two piccies of the rusty balance pipe.
Cheers
John