Automatically add text to a thread title?

[Big_Jason]

Hey guys. How do I have some predefined text added to every thread title any user creates?

For example, if JohnSnow creates a thread titled "Hello World", I would like that thread title to display as "Set Test - Hello World" once submitted.

Or even better, I'd like to do this based on which subforum/section the thread was submitted to. So for example if JohnSnow created his "Hello World" thread in the "Newbie" section, I'd like the thread title to show as "Newbie - Hello World". Then later he starts a different thread in the "Help" section called "How do I post a picture?" I'd like this thread to show as "Help - How do I post a picture?"

Thoughts?