Creating a kind of link tree in the Who list

[Aaron10]

Hi, I'm wanting to make a bit of a link tree in the who list when people are browsing topics, to also show the parent/childs boards too, for example:

Viewing the Topic
Board Name > Topic Subject

or

Viewing the Topic
Board Name > Child Board Name > Topic Subject

(I dont have a lot child boards within child boards, so two levels will look fine for me). Thanks