C++: Nesting public in private == private?

[Mikael Hansson]

cyrille.damez skrev:
>
>     If the inner class is in the private section, then other classes
>     won't be allowed to see it (as if it was in another namespace), so
>     they won't be able to access its members.
>     What's wrong with std::list ?
>
Not allowed :)

Getting some university points in C++ so we're supposed to show that we 
can implement a list.

Thanks for your help!

/Micke