Node containing class object (rather than int)

[paraboloid]

I'm making a red black tree (RedBlack class) whose nodes will contain customers (customer class) rather than the generic int data. Unfortunately, I can't seem to get VS 2008 Express recognize that data is of type customer. I get all sorts of redefinition errors, and I've tried pragma once and include guards to no avail.

//HEADER for customer class//
#include <string>
using namespace std;
class customer
{
public:
	customer();
	customer(string last, char first, int balance);
	void set_account(int balance);
	string get_name();
	char get_initial();
	int get_account();
	~customer(void);
private:
	string name;//customer's last name
	char initial;//customer's first initial
	int account;//balance owed by customer
};
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//CPP FILE for customer class
#include "StdAfx.h"
#include "customer.h"

customer::customer(){
}
customer::customer(string last, char first, int balance)
{
	name = last;
	initial = first;
	account = balance;
}
void customer::set_account(int balance){
	account = balance;
}
string customer::get_name(){
	return name;	
}
char customer::get_initial(){
	return initial;
}
int customer::get_account(){
	return account;
}
customer::~customer(void)
{
}

//HEADER
#pragma once
//#ifndef CUSTOMER_H
//#define CUSTOMER_H
#include "customer.h"

class RedBlack
{
private:
	struct node {
		bool red; //True if red, False if black
		int data; //customer data
		struct node *next[2]; //pointer to an array where index 0 is left and index 1 is right
	};
	node *root;
	customer data;
	struct tree{
	struct node *root;//pointer to the root
	};
public:
	RedBlack();
	bool isRed(struct node *root);
	~RedBlack(void);

//#endif
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//CPP
#include "StdAfx.h"
//#ifndef CUSTOMER_HPP
//#define CUSTOMER_HPP

#include "RedBlack.h"

RedBlack::RedBlack()
{
	root = NULL;
}
bool RedBlack::isRed(struct node *root){
	if (root != NULL && root->red == true)
		return true;
}
RedBlack::~RedBlack(void)
{
}
//#endif
};

Any help would be much appreciated