47293 Image Resize & Resample Script

We currently have three images pulled from an XML feed of our supplier - the thumbnail (which is W: 24px BY H: 70px), medium image (which varies in size, but is around W: 150px BY H: 240px), and our large image (which again varies, but can be around W: 119px BY H: 354px and up). What we need is a script that will take our largest image resize AND RESAMPLE that image to W: 117px BY H: 180px, and on top of that we need the images to be as small in size as possible - so that the pages load quickly.