Admin Product Search tool

Part 1 We require a modification to the Manual order editor in our OSCommerced based store. At the moment product selection is done via dropdown boxes which if the operator is not familiar with the category tree is problematical if not impossible. We would like the operator to be able to type in the first part of a product name or model to locate and select the product. Part 2 We have an 'Upsell Module' which is used to associate products and display upsell options at the checkout. We would like the same upsell information displayed when selecting a product within the manual order editor.