These files accompany "How To Do Everything with Web 2.0 Mashups" by Jesse Feiler. There are Read Me files for each archive. They will identify the places where you need to insert your own access keys and codes in the files. Most will not run until you have registered with Google, Flickr, eBay, or whatever service you want to use. The files can be downloaded from the publisher's Web site or from the author's. If you go to the author's Web site, www.northcountryconsulting.com, you will find a link to Downloads & Updates in the lower right of the page. That's where the files are. You will also find updates and corrections of typos there. You can register for a mailing list that will bring you notifications of updates or changes in the files. Welcome to the world of mashups! Jesse Feiler