Web Admin for Photo Uploads (PHP, MySQL, possibly Wordpress)

As part of a web design for a client, we are creating a section where users can upload photos. These photos will be reviewed by an admin, and if approved, be posted on the site. We'll supply the design files (HTML, CSS, etc.). We're looking for someone to program the ability to upload the photo, and then display approved photos on the site, along with creating an admin tool to review and approve/disapprove photos. Ideally, we'd like to use Wordpress for the administrative function, adopting/customizing/writing a plug-in as this functionality is pretty basic. We're open to suggestions, so please feel free to respond with potential approaches you might take.