Using modules (HMVC) to dictate page titles

[eluser]Unknown[/eluser]
Hi Guys / Gals

Pretty simple problem, although I have no idea how accomplish the task.

Basically I want to allow the module to decide what the page title will be.

Example:

Say I have the following.

domain.com/blog - Page title should be something generic, setup in MY_Controller perhaps?
domain.com/blog/posts/view/1 - This page title needs to be something different.

Anyway I can set the second page title from inside the posts module controller?

Thanks all