phpmydirectory Customization

I am currently using the script phpmydirectory which has the lightbox js script implemented to show an image gallery. Howver, the links on the site are not configured how I would like. For a specific type of listing, I would like a user to click on the company logo and then the site displays the images stored in the database for that listing using lightbox js over the current page. At the moment, you have to navigate to a different page for this to be done. I would also like the picture title and description to be displayed within the slideshow border. Currently, it says image 1 of 2 or however many images are stored for that particular listing. I need a very quick turn around on this and I know that it isn't a very big job. I only want somebody who knows understands the job and can complete within 3 working days.