Only I used delegate. The two functions are very similer but delegate is slightly more versatile. Basically, you need to figure out a jQuery selector that matches the elements you will want to re-attach the lightbox plugin to. Then in the anonymous function, you can call the lightbox plugin on the appropriate event (such as click).
With live you have to be able to match your exactly target elements in the jQuery selector. With delegate, you can do the element matching in two parts: one in the jQuery selector (such as the container for where the new elements will always be added in), then within that in the delegate call.
Wade.