Set default Image on product_info.php

I have an OSCommerce website which has a functionality installed in which you can list 2 product images for a product where one of them shows up by default on the [login to view URL] page (for example, the front of a jacket) and then when you scroll over the product, a second image replaces the default image (for example, the back of the jacket). I like this functionality, however, whenever you click on the product -- when you get to the [login to view URL] page, the second image shows up as the only (and the default) image on that page. This is the issue I have -- I want the default picture on the [login to view URL] page be the default picture on the [login to view URL] page (right now it doesn't even show up on that page). I still do want the second image listed on the [login to view URL] page as well, however I don't want it to be the large default image. You can see an example of this here: [login to view URL] The other issue I have is that there is a blank white space just under the tabulated titles (description, product details, and size chart) on my [login to view URL] page. I want that blank space removed. I also want to make sure the entire box is outlined (I think this might automatically happen when the white space is removed). I have attached a picture which helps better describe everything I am wanting.