First, you get the files from the iBox site, then upload the ibox.js and ibox.css files to your template folder. Get the indicator.gif file and put it in the images folder in your root folder (NOT the images inside your template folder, capiche?). If your template doesn’t have an image fold, you’ll need to create one.
No, that is not it. There is more to it than what I have quoted here, that way you actually have to go and check out the article on MacStansbury.