RakNet implementation compile error

I'm with a problem when I try to compile the TGB with RakNet...

this is the error:
netRakNet.obj : error LNK2005: "void * __cdecl operator new(unsigned int,void *)" (??2@YAPAXIPAX@Z) already defined in winMemory.obj
../../../tgb/gameData/T2DProject/TGBGame.exe : fatal error LNK1169: one or more multiply defined symbols found

I'm was reading the forum, and almost every post was about STL problem, but I did'n found any STL call inside the RakNet header files...

Here what I'm doing:
Header file

#ifndef _NETRAKNET_H_
#define _NETRAKNET_H_

#ifndef _SIMBASE_H_
#include "console/simBase.h"
#endif

#include "raknet/include/MessageIdentifiers.h"
#include "raknet/include/RakPeerInterface.h"
#include "raknet/include/RakNetTypes.h"

class netRakNet : public SimObject 
{
public:
	typedef SimObject Parent;

	bool ServerConnect( unsigned short serverMaxAllowed, unsigned short serverMaxUser, unsigned short serverPort);
	bool PeertoPeerConnect( unsigned short serverMaxAllowed, unsigned short serverMaxUser, unsigned short serverPort);
	bool ClientConnect( char* serverIP, unsigned short serverPort);

	DECLARE_CONOBJECT( netRakNet );
private:
	RakNet::RakPeerInterface* peer;
};

#endif

All the best!