OScommerce infobox search panel

I need a custom search panel for OScommerce as an info box to replace '[login to view URL]' It is for a house plans site and needs to be the same as the attached [login to view URL] sample file. The search panel is needed to specify the key features such as number of bedrooms, bathrooms, house type, garage, etc It must submit a database query and display the results on the product list page with the key features. There is an existing ocs contribution that will display attributes on the product list page so explain which method you will use with your quote.