thumbnail script

Hi, Anybody know of a thumbnail script which does either one of the following: 1.Support GIF,JPG,PNG, when called the first time it should show/create the thumbnail "on the fly" and save it. or 2.Support GIF,JPG,PNG and thumbnail image any new files uploaded, and save the thumb to another directory I have downloaded a bunch of classes from php classes, the only good one (or the one that worked with me) is "img2thumb10a-2003-03-28", and that only works with GD2. Two problems, 1. the server that has GD2 is a different server from where the main site is. 2. This creates the thumb dynamically via an img tag....but does not save it...so everytime a visitor opens up the "portfolio" it generates the thumb....which will be a load on the server in the long run, something that would be cut down a lot if after it first generated it, it saved the image in some directory. any ideas? or urls? (and yes, i tried hotscripts, google) Thanks, -Ryan