TDOMF and Shadowbox

I have tried and tried to get the lightbox (I am using shadowbox WP plugin) to work with my TDOMF form uloaded images, but no luck. I can get the thumb to appear and when clicked on the full size image will load in a new blank page. I can also get the thumb to appear and when cliked on it will open up in a new post like page and can be clicked on and the lightbox function works then. I am new to this. Only been doing this about 1 week and all this time was spent on trying to get this to work. I would be so gratefull if anyone would be willing to help me. Please just tell me what you need from me. Thank you. Mark