Wordpress Theme based on existing site

We need a Wordpress theme based on an existing Joomla design
The Joomla design is almost done so should be pretty easy, we can also supply the png file the Joomla design was based on.

Desired Color Scheme:
as per Joomla site

Desired Style:
as per Joomla site

Accepted File Formats:
wordpress theme files

We are just finishing up a new Joomla site at http://www.immediatefuture.co.uk/index.php and we want to use a very similar design on a Wordpress blog which is being created here:
http://gucci.livingdot.com/~immfut08/wp/

Adaptations needed from one to the other are as follows:

Wordpress site should be fixed width, single right-hand column, (similar layout as it is now
Pages in horizontal tabbed menu under the logo

Logo, tabs etc. should be the same one as used on the main site

Plugins etc on the right column of the blog should be styled as per the modules on the right hand side of the website.

As this contest shouldn't need too much creative work (if any) it will be awarded based on being able to show some experience of Wordpress site themes and good CSS coding.