is it possible to have templated classes within a template class?

template <class M, class A> class C { std::list<M> m_List; ... }

Error 1 error C2079: 'std::_List_nod<_Ty,_Alloc>::_Node::_Myval' uses undefined class 'M'   C:Program FilesMicrosoft Visual Studio 9.0VCincludelist	41

// template definition file
#include <list>

template< class aM, class aT >
class C {
    std::list<M> m_List;
    ...
};

// bad template usage file causing the aforementioned error
class M;
...
C<M,OtherClass> c; // this would result in your error

class M { double data; };

// better template usage file
class M { double data; }; // or #include the class header
...

C<M,OtherClass> c; // this would have to compile