I'm looking into using the ImageShack.us API for uploading images from my website. I found this tutorial for using it with the XML return http://elliottback.com/wp/using-the-imageshack-xml-api/, but I'm not sure about what to do with it. Where do I enter my API key for this script? Furthermore, he shows the use of two PHP files - should these be combined into one file?
Any help with this would be appreciated (examples would be even better).