http://support.ca.com
login with your email address and password
Click Download Center on left
Add Product Name (there are nine possible choices for CA Service Desk Manager depending on how you were licensed)
Most customers are licensed under "CA Service Desk Manager Full License - MULTI-PLATFORM"
Add release/gen level - 12.9/0001
Hit blue "Go" button at bottom and all DVD components appear.
ITIL content is listed fourth from top as below.
DVD9 Content Pack for ITIL for CA Service Desk Manager 12.9, 5/14
DVD04115408E.iso