Oh come on, I'm sure you have something to trade. MP3s, movies, pr0n? 😉 hehe
But yeah, the script can easily be hard coded to resize the images to pre-defined dimensions. In fact, that would be easier to do than set it up the way I have to accept a value from a text box.
I'll post the source later tonight (at work right now... slow Friday, haha). You can keep your echo script though. :p