I am excited to announce, PSD2HTML has jumped on board as a site sponsor, you can see their ad on the sidebar to the right.
These guys do an amazing job of tranforming your .psd, .png, .ai file, or even existing HTML markup into well-written XHTML and CSS code. They have many different options for blogs and shopping carts including options that allow clients to implement their designs as skins / themes / templates for WordPress, Movable Type, Drupal, Joomla!, Pligg, Blogger, Shopify, X-Cart, CMS Made Simple, CubeCart, and others. The turn around time is terrific, they offer standard delivery time of up to 8 work-hours for the first page of the order.
If you need valid XHTML and CSS and already have designed the layout, please give them a look!