Here you can find the Companion CD for some of those ebooks you may have!
Code:
http://safariexamples.informit.com/
The xxxxxxxxxx folders are, in fact, the ISBN codes of books. So, first search for the ISBN code of your book (usually, on the "Copyright notice" page) like, for instance,
0-7357-1253-0, and then see if the coresponding folder exists, in this case is folder 0735712530.
I hope someone will find this info useful. I did.