OsCommerce attribute modification

I require a modification to oscommerce which will allow me to nest attributes and only reveal them if the attribute is selected. an example would be radio 3 radio buttons. * Use my own image * Use image on file * No image is required If "use my own image" is selected it reveals an image upload attribute (Image upload functionality is already installed and working using 'optiontypes v2'). If "use image on file" is selected it reveals a text box or other attribute. "No image is required" doesn't reveal any extra attributes. A store which uses a similar system to what I am looking for is:? <[login to view URL]>