diff --git a/blupi.cpp b/blupi.cpp
index 7ee5bcc..41ba8e2 100644
--- a/blupi.cpp
+++ b/blupi.cpp
@@ -72,7 +72,7 @@ bool ReadConfig(LPSTR lpCmdLine)
 	FILE*		file    = NULL;
 	char		buffer[200];
 	char*		pText;
-	int			nb;
+	size_t		nb;
 
 	file = fopen("data\\config.def", "rb");
 	if ( file == NULL )  return false;
@@ -476,7 +476,7 @@ LRESULT CALLBACK WindowProc (HWND hWnd, UINT message,
 				else
 				{
 					char s[50];
-					sprintf(s, "wParam=%d\n", wParam);
+					sprintf(s, "wParam=%d\n", static_cast<int> (wParam));
 					OutputDebug(s);
 				}
 			}
@@ -838,7 +838,7 @@ int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
 		{
 			if ( !GetMessage(&msg, NULL, 0, 0) )
 			{
-				return msg.wParam;
+				return static_cast<int> (msg.wParam);
 			}
 			TranslateMessage(&msg); 
 			DispatchMessage(&msg);
@@ -850,6 +850,6 @@ int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
 		}
 	}
 
-	return msg.wParam;
+	return static_cast<int> (msg.wParam);
 }
 
diff --git a/decio.cpp b/decio.cpp
index 68804fc..0304261 100644
--- a/decio.cpp
+++ b/decio.cpp
@@ -98,7 +98,8 @@ bool CDecor::Write(int rank, bool bUser, int world, int time, int total)
 	char		filename[MAX_PATH];
 	FILE*		file    = NULL;
 	DescFile*	pBuffer = NULL;
-	int			nb, i;
+	int			i;
+	size_t		nb;
 
 	if ( bUser )
 	{
@@ -181,7 +182,8 @@ bool CDecor::Read(int rank, bool bUser, int &world, int &time, int &total)
 	FILE*		file    = NULL;
 	DescFile*	pBuffer = NULL;
 	int			majRev, minRev;
-	int			nb, i, x, y;
+	int			i, x, y;
+	size_t		nb;
 	OldBlupi	oldBlupi;
 
 	Init(-1, -1);
@@ -325,7 +327,7 @@ bool CDecor::FileExist(int rank, bool bUser, int &world, int &time, int &total)
 	FILE*		file    = NULL;
 	DescFile*	pBuffer = NULL;
 	int			majRev, minRev;
-	int			nb;
+	size_t		nb;
 
 	if ( bUser )
 	{
diff --git a/event.cpp b/event.cpp
index bcfcbbd..f7ead84 100644
--- a/event.cpp
+++ b/event.cpp
@@ -1738,7 +1738,8 @@ bool CEvent::CreateButtons()
 
 void AddCheatCode(char *pDst, char *pSrc)
 {
-	int		i, j;
+	int		i;
+	size_t	j;
 
 	if ( pDst[0] != 0 )  strcat(pDst, " / ");
 
@@ -4197,7 +4198,8 @@ bool CEvent::ReadLibelle(int world, bool bSchool, bool bHelp)
 	char*		pText;
 	char*		pDest;
 	char		indic;
-	int			nb, h1, h2;
+	int			h1, h2;
+	size_t		nb;
 
 	if ( bSchool )  indic = '$';
 	else            indic = '#';
@@ -4259,7 +4261,7 @@ bool CEvent::WriteInfo()
 	char		filename[MAX_PATH];
 	FILE*		file = NULL;
 	DescInfo	info;
-	int			nb;
+	size_t		nb;
 
 	strcpy(filename, "data\\info.blp");
 	AddUserPath(filename);
@@ -4301,7 +4303,7 @@ bool CEvent::ReadInfo()
 	char		filename[MAX_PATH];
 	FILE*		file = NULL;
 	DescInfo	info;
-	int			nb;
+	size_t		nb;
 
 	strcpy(filename, "data\\info.blp");
 	AddUserPath(filename);
@@ -4421,7 +4423,8 @@ bool CEvent::DemoPlayStart()
 	char		filename[MAX_PATH];
 	FILE*		file = NULL;
 	DemoHeader	header;
-	int			nb, world, time, total;
+	int			world, time, total;
+	size_t		nb;
 
 	m_pDemoBuffer = (DemoEvent*)malloc(MAXDEMO*sizeof(DemoEvent));
 	if ( m_pDemoBuffer == NULL )  return false;
@@ -4622,7 +4625,7 @@ bool CEvent::TreatEventBase(UINT message, WPARAM wParam, LPARAM lParam)
 	bool		bEnable;
 
 	pos = ConvLongToPos(lParam);
-	fwKeys = wParam;
+	fwKeys = static_cast<int> (wParam);
 
 	DemoRecEvent(message, wParam, lParam);
 
diff --git a/event.h b/event.h
index 690efc6..123e344 100644
--- a/event.h
+++ b/event.h
@@ -209,8 +209,8 @@ protected:
 	bool		m_bDemoPlay;
 	DemoEvent*	m_pDemoBuffer;
 	int			m_demoTime;
-	int			m_demoIndex;
-	int			m_demoEnd;
+	size_t		m_demoIndex;
+	size_t		m_demoEnd;
 	int			m_demoNumber;
 	bool		m_bCtrlDown;
 	POINT		m_debugPos;
diff --git a/misc.cpp b/misc.cpp
index dc4e51a..5de4853 100644
--- a/misc.cpp
+++ b/misc.cpp
@@ -114,9 +114,9 @@ int Random(int min, int max)
 
 // Retourne le nom de dossier en cours.
 
-void GetCurrentDir(char *pName, int lg)
+void GetCurrentDir(char *pName, size_t lg)
 {
-	int		i;
+	size_t		i;
 
 	strncpy(pName, _pgmptr, lg-1);
 	pName[lg-1] = 0;
@@ -152,7 +152,7 @@ void GetCurrentDir(char *pName, int lg)
 void AddCDPath(char *pFilename)
 {
 	char	temp[MAX_PATH];
-	int		lg;
+	size_t	lg;
 	bool	bDaniel = false;
 
 	if ( g_CDPath[0] == 0 )  return;
@@ -192,7 +192,7 @@ void AddUserPath(char *pFilename)
 {
 	char					temp[MAX_PATH];
 	char*					pText;
-	int						pos;
+	size_t					pos;
 	char					last;
 	SECURITY_ATTRIBUTES		att;
 
diff --git a/misc.h b/misc.h
index 1b41525..7f74b1f 100644
--- a/misc.h
+++ b/misc.h
@@ -13,7 +13,7 @@ extern POINT ConvLongToPos(LPARAM lParam);
 extern void	InitRandom();
 extern int	Random(int min, int max);
 
-extern void GetCurrentDir(char *pName, int lg);
+extern void GetCurrentDir(char *pName, size_t lg);
 extern void AddCDPath(char *pFilename);
 extern void AddUserPath(char *pFilename);
 
diff --git a/movie.cpp b/movie.cpp
index 5934f7a..c170460 100644
--- a/movie.cpp
+++ b/movie.cpp
@@ -41,7 +41,7 @@ bool CMovie::initAVI()
 		
 	// try to open the driver
 	return (mciSendCommand(0, MCI_OPEN, (DWORD)(MCI_OPEN_TYPE),
-                           (DWORD)(LPMCI_DGV_OPEN_PARMS)&mciOpen) == 0);
+                           (DWORD_PTR)(LPMCI_DGV_OPEN_PARMS)&mciOpen) == 0);
 }
 
 // Closes the opened AVI file and the opened device type.                                               |
@@ -55,7 +55,7 @@ void CMovie::termAVI()
 	// the device type.
 	mciID = mciGetDeviceID(AVI_VIDEO);
 	mciSendCommand(mciID, MCI_CLOSE, 0L,
-                   (DWORD)(LPMCI_GENERIC_PARMS)&mciClose);
+                   (DWORD_PTR)(LPMCI_GENERIC_PARMS)&mciClose);
 }
 
 
@@ -78,7 +78,7 @@ void CMovie::fileCloseMovie(HWND hWnd)
 	MCI_GENERIC_PARMS  mciGeneric;
 
 	mciSendCommand(m_wMCIDeviceID, MCI_CLOSE, 0L,
-				   (DWORD)(LPMCI_GENERIC_PARMS)&mciGeneric);
+				   (DWORD_PTR)(LPMCI_GENERIC_PARMS)&mciGeneric);
 
 	m_fPlaying   = false;	// can't be playing any longer
 	m_fMovieOpen = false;	// no more movies open
@@ -128,7 +128,7 @@ bool CMovie::fileOpenMovie(HWND hWnd, RECT rect, char *pFilename)
 	// try to open the file
 	if ( mciSendCommand(0, MCI_OPEN,
 				(DWORD)(MCI_OPEN_ELEMENT|MCI_DGV_OPEN_PARENT|MCI_DGV_OPEN_WS),
-				(DWORD)(LPMCI_DGV_OPEN_PARMS)&mciOpen) == 0 )
+				(DWORD_PTR)(LPMCI_DGV_OPEN_PARMS)&mciOpen) == 0 )
 	{
 		// we opened the file o.k., now set up to play it.
 		m_wMCIDeviceID = mciOpen.wDeviceID;	// save ID
@@ -147,7 +147,7 @@ bool CMovie::fileOpenMovie(HWND hWnd, RECT rect, char *pFilename)
 		mciStatus.dwItem = MCI_DGV_STATUS_HWND;
 		mciSendCommand(m_wMCIDeviceID,
 					   MCI_STATUS, MCI_STATUS_ITEM,
-					   (DWORD)(LPMCI_STATUS_PARMS)&mciStatus);
+					   (DWORD_PTR)(LPMCI_STATUS_PARMS)&mciStatus);
 		m_hwndMovie = (HWND)mciStatus.dwReturn;
 
 		// now get the movie centered
@@ -193,7 +193,7 @@ void CMovie::playMovie(HWND hWnd, int nDirection)
 			dwFlags |= MCI_DGV_PLAY_REVERSE;
 		
 		mciSendCommand(m_wMCIDeviceID, MCI_PLAY, dwFlags,
-		               (DWORD)(LPMCI_DGV_PLAY_PARMS)&mciPlay);
+		               (DWORD_PTR)(LPMCI_DGV_PLAY_PARMS)&mciPlay);
 	}
 	else
 	{
@@ -201,7 +201,7 @@ void CMovie::playMovie(HWND hWnd, int nDirection)
 	
 		// tell it to pause
 		mciSendCommand(m_wMCIDeviceID,MCI_PAUSE,0L,
-                      (DWORD)(LPMCI_DGV_PAUSE_PARMS)&mciPause);
+                      (DWORD_PTR)(LPMCI_DGV_PAUSE_PARMS)&mciPause);
 	}
 }
 
diff --git a/sound.cpp b/sound.cpp
index 0f9a936..570db58 100644
--- a/sound.cpp
+++ b/sound.cpp
@@ -548,7 +548,7 @@ bool CSound::PlayMusic(HWND hWnd, LPSTR lpszMIDIFilename)
 	dwReturn = mciSendCommand(NULL,
 							  MCI_OPEN,
 							  MCI_OPEN_TYPE|MCI_OPEN_ELEMENT,
-							  (DWORD)(LPVOID)&mciOpenParms);
+							  (DWORD_PTR)(LPVOID)&mciOpenParms);
 	if ( dwReturn != 0 )
 	{
 		OutputDebug("PlayMusic-1\n");
@@ -562,11 +562,11 @@ bool CSound::PlayMusic(HWND hWnd, LPSTR lpszMIDIFilename)
 	m_MidiDeviceID = mciOpenParms.wDeviceID;
 
 	// Begin playback. 
-	mciPlayParms.dwCallback = (DWORD)hWnd;
+	mciPlayParms.dwCallback = (DWORD_PTR)hWnd;
 	dwReturn = mciSendCommand(m_MidiDeviceID,
 							  MCI_PLAY,
 							  MCI_NOTIFY, 
-							  (DWORD)(LPVOID)&mciPlayParms);
+							  (DWORD_PTR)(LPVOID)&mciPlayParms);
 	if ( dwReturn != 0 )
 	{
 		OutputDebug("PlayMusic-2\n");