Regarding not finding it on edonkey:
there's a service called "FileDonkey" for searching through eDonkey for files (
www.filedonkey.com). I did a search not too long ago and a lot of different CDs for CATIA showed up on it.
Also, you might have to install eMule (
www.emule-project.net). eMule works way better with FileDonkey, and plus, there are built in global search functions.
you can also get a list of eDonkey servers here
http://ed2k.2x4u.de/list.html
this will let you log into the busiest servers, so you have a better chance of finding the files you need.
hope this helps!