<<If you're at all interested preserving your images and making sure you don't have multiple copies of the same image in your directories (albeit in different sizes), what you probably want is a digital asset management system. There are a number of them on the market, and some pretty decent open source alternatives. Since it seems like your needs are fairly modest, something like Razuna, DSpace, EnterMedia, or ResourceSpace would work well>>
This wasn't a concern of the OP, but I'm curious: Of these open source products, would any of them would work well in a situation where the image files are on an independent server with its own filesystem, not held within the database or as part of the database server? In other words, along with whatever metadata is in the DAM it would have to track a filepath for each image, rather than actually "having" a copy of the image? -Steve, Peabody Museum, Cambridge Massachusetts USA