CSS Stylesheets for a Web Application

I am looking to work with a designer who will help me to refine the look and feel of my "web application" (not a web site) primarily by amending an existing CSS style sheet. The application is already in beta but I would like to make it look more attractive and I think a skilled web designer could improve things considerably. The main criteria I am looking for are: - Able to work on a WINDOWS platform, not Mac, as you will need to take a copy of the application and run it locally, and it is a windows program. (The program is effectively a standalone web server) - Very knowledgeable about CSS - A track record of creating attractive and well-designed web sites - I would like to see some examples - Good written English and communication skills ## Deliverables Please see an attached screenshot of the application's main screen, running inside IE7. What I would like is for the winning designer to come up with 3-4 alternative "themes" for the design, ie. 3-4 different versions of the style sheet, eg. 1 primarily with black background, with white text. 1 primarily with navy blue background, with white text 1 primarily with a silver background, with black text etc. I am also looking for a good use of fonts, shading, gradients etc to give the screens a polished look.