334133 Javascript changes in Lightbox

I would like someone to modify lightbox gallery script in three ways: 1. Display Next/Previous buttons in the bottom action bar on the right or left and remove the portion that displays these in the photo. 2. I would like the option to display two lines of caption for next photo. 3. Modify the screen size check routine to allow for options for amount of full screen the lightbox will fill. I have knowledge of PHP/HTML/CSS but very little Javascript. I can explain in greater detail each of these requirements and help figure best solution. I need someone who will be able to complete this project in the next few days.