Wanting to do some stuff with playlists...

Hi guys, I want to create some playlists to sort of behave like tv shows but not quite...

I have custom nfo files I have made myself which I don't want to be scraped from any database.
I don't want to add the files as a show or a movie. I don't want it to appear in the movies/tv shows section basically...how do I do this?
Then I want to create smart playlists to find what I want from it and add it to my home menu sort of....

I want my home menu to be like this "Custom Videos". Then under it, it will have say 4 options "custom videos 1" "custom videos 2" "custom videos 3" "custom videos 4"
If I click the main button "Custom Videos" it will show those 4 options in like a list, how do I do that?
The "custom videos 1-4" I want to open up a list of playlists. So if I click "custom videos 1" it will show a list of playlists such as "playlist 1" "playlist 2" etc etc
Then those play lists will have the files I want to play...

I'm not sure I have explained this that well, if you need clarification please ask, i'll try to explain it a bit better.

Had a thought, for the menu item, can it be a playlist that shows playlists? If that makes sense? Like can a playlist contain playlists?