error class type redefinition

I hope there's room for beginners here..

If you have time, please take a look at my 3 files (2 headers, 1 cpp)

////Item.h//////


/**Item header*/
class Item{
private:
     int a;
     char b;
public:
     Item(){};

     Item(int a, char b){
          a=0;
//          b="w";
     };
     ~Item() {};
};

--------------------------------------

///////node.h//////

// Node Header

#include "Item.h"
class node
{
     Item item;
     node* next;
     node(Item x, node* t)
     {
//          item = x;
//          next = t;
     };


};
typedef node* link;

--------------------------------------
/////list.cpp//////


/* Program linkedlist */

#include <stdlib.h>
#include "Item.h"
#include "node.h"

void main()
{
     Item data;
};

--------------------------------



compiling this in VB6 gives me 1 error and really I don't get it..
the produced error :

--------------------Configuration: Trees - Win32 Release--------------------
Compiling...
list.cpp
C:\Program Files\Microsoft Visual Studio\MyProjects\Trees\Item.h(4) : error C2011: 'Item' : 'class' type redefinition
Error executing cl.exe.

list.obj - 1 error(s), 0 warning(s)


I've tried struct also, same difference..I think maybe it has something to do with the construction of my class, but comparing with examples I found I don't see a difference..would anyone be able to clarify this for me?
the point is in the end to produce trees but I wanted to start with linked lists first to see if I understand that already..

Big thanks!