Hi guys - I was wondering if anyone knew a good method for combining two series of images together into a single series? Basically, I'll be rendering out a series of models and also rendering out the shadows for each frame seperately. We'll be doing some post-processing on the images that means we can't simply render them as one image, but we'll end up with two 'finished' series of images that just need to be merged together. To make things more complex, the files in questions will be pngs and therefore will have transparency - we can't afford to lose that. Usually I'd use a Photoshop droplet, but I'm not sure of any way for to set that up so it automatically combines the right images with one another. They'll all be numbered sequentially, so 'model5.png' simply needs to be placed on top of shadow5.png' and saved, but it's a bit beyond my abilities at the moment. Anyone got any experience/ideas about doing this?