Product Options Customizer

Qualified oscommerce/osc max developer needed to implement 'Product Customizer' for 3 products that have many options. Existing site already has product options/attributes contribution now need to customize look and feel to make easier/user-friendly for users. Products and their options are already in database. Need Fully Responsive CSS HTML5 Design, Smart Drop Down elements based on user selection (different choices give different options), Realtime price update of item as attributes are updated, 'Hebrew Keyboard' function so user can enter personalization (example URLs provided) There are around maximum 6 options for the products, sometimes less depends on user choice (ie, if user chooses certain style, only show certain colors for that style, etc) Will Provide: Layered Fireworks PNG file or Photoshop (prefer former) with each 'Creators' Options. Access to Sandbox.