taxonomy tree with views? (feel free to suggest a better title)

Hi all,

due to my english I wasn't able to perform a proper search on the internet, so all the results I got were unconsistent. This is the reason i post here my question, hoping to be pointed to the right direction.

This is my case, i have a tree of taxonomy terms

taxonomy term
- sublevel a
-- sub-sublevel
--- related node
--- other related node
--- etc
-- sub-sublevel b
--- node
--- node
--- etc
- sublevel b
-- (structure similar to the sublevel a)

what i want to accomplish is the following:

a list of taxonomy terms, clicking on which....
i see a list of the sublevel taxonomy terms, clicking on which...
i see a list of the sub-sublevel clicking on which...
i finally see a list of nodes.

I'm quite sure there is a way to configure views to accomplish this (I once found sort of a tutorial related to drupal 6), but I cannot find the resource anymore.

can you help me? Any help appreciated, even only a some pointers to a proper google crawl, i'm stuck.

Thank you very much
Simone (Rome)