OSCommerce Additions

We have created a website [login to view URL] it uses the OSCommerce platform. We are needing a few additions, the additions required are listed below: 1. The price field needs to be able to have text put in before the price for example (PCM £390) 2. We need more 20 x images for each property, and we dont want it to display empty boxes if no images are uploaded. 3. We need the following fields to be displayed for each property Number of bedrooms, Number of bathrooms, Ref number, Property Size sqm, Area, Airport. These fields need to be displayed at the top of each property with the facility to entre the details in the admin section. Thats it. Thanks Matthew