Sorry - your last post slipped past me.
I had been playing with your site style for the 'contact us' and 'thank you' pages. My thinking was that there was so much white space, that it could be put to good use by putting another 'info' column to the left of the form.
I removed a lot of the colour-clashing field shenanigans and tidied up the original form's css. This is just a modified 'contact_styled.php' page, but with some of your elements incorporated.
Have a look here, and see if it's going in the right direction. You will need to send a message to see the 'thank you' page (which is pretty much the same) - just type in any junk, I will bin them when they arrive!
PS - here's a version without the security question.