Matias has published 3 articles that explore frequently requested areas about the Composite UI Application Block architecture:

• Hosting CAB based applications on other solutions/envirionments (like Outlook, existing Win32 apps, user controls, etc.)
• Adding behaviour at module loading time. (roles, on-demand loading, etc)

Check them out here:

HowTo: Host a CAB application in Outlook, Word, Excel, or a common Winforms application:

http://staff.southworks.net/blogs/matiaswoloski/archive/2006/02/26/HostingCAB.aspx

HowTo: Host CAB in a UserControl - In depth:

http://staff.southworks.net/blogs/matiaswoloski/archive/2006/02/26/230.aspx

HowTo: Load CAB modules on demand: see here