diff --git a/reactos/dll/cpl/desk/appearance.c b/reactos/dll/cpl/desk/appearance.c
index 4c02abefa00..3fda33dc132 100644
--- a/reactos/dll/cpl/desk/appearance.c
+++ b/reactos/dll/cpl/desk/appearance.c
@@ -15,6 +15,10 @@ INT_PTR CALLBACK AppearancePageProc(HWND hwndDlg,
                                     WPARAM wParam,
                                     LPARAM lParam)
 {
+    UNREFERENCED_PARAMETER(lParam)
+    UNREFERENCED_PARAMETER(wParam)
+    UNREFERENCED_PARAMETER(hwndDlg)
+
     switch(uMsg)
     {
         case WM_INITDIALOG:
diff --git a/reactos/dll/cpl/desk/background.c b/reactos/dll/cpl/desk/background.c
index bdbe92271de..11cf35a708f 100644
--- a/reactos/dll/cpl/desk/background.c
+++ b/reactos/dll/cpl/desk/background.c
@@ -302,6 +302,8 @@ void OnColorButton()
 
 BOOL CheckListBoxFilename(HWND list, TCHAR *filename)
 {
+    UNREFERENCED_PARAMETER(filename)
+    UNREFERENCED_PARAMETER(list)
     return FALSE;
 }
 
@@ -571,7 +573,7 @@ INT_PTR CALLBACK BackgroundPageProc(HWND hwndDlg,
                         {
                             if(command == CBN_SELCHANGE)
                             {
-                                g_placementSelection = SendMessage(g_hPlacementCombo, CB_GETCURSEL, 0, 0);
+                                g_placementSelection = (int)SendMessage(g_hPlacementCombo, CB_GETCURSEL, 0, 0);
                                 
                                 InvalidateRect(g_hBackgroundPreview, NULL, TRUE);
                                 
diff --git a/reactos/dll/cpl/desk/desk.c b/reactos/dll/cpl/desk/desk.c
index 6a8ef5a4c5c..45f3b6c27d7 100644
--- a/reactos/dll/cpl/desk/desk.c
+++ b/reactos/dll/cpl/desk/desk.c
@@ -49,6 +49,11 @@ LONG APIENTRY DisplayApplet(HWND hwnd, UINT uMsg, LONG wParam, LONG lParam)
     PROPSHEETHEADER psh;
     TCHAR Caption[1024];
     
+    UNREFERENCED_PARAMETER(lParam)
+    UNREFERENCED_PARAMETER(wParam)
+    UNREFERENCED_PARAMETER(uMsg)
+    UNREFERENCED_PARAMETER(hwnd)
+
     LoadString(hApplet, IDS_CPLNAME, Caption, sizeof(Caption) / sizeof(TCHAR));
     
     ZeroMemory(&psh, sizeof(PROPSHEETHEADER));
@@ -62,10 +67,10 @@ LONG APIENTRY DisplayApplet(HWND hwnd, UINT uMsg, LONG wParam, LONG lParam)
     psh.nStartPage = 0;
     psh.ppsp = psp;
     
-    InitPropSheetPage(&psp[0], IDD_BACKGROUND, BackgroundPageProc);
-    InitPropSheetPage(&psp[1], IDD_SCREENSAVER, ScreenSaverPageProc);
-    InitPropSheetPage(&psp[2], IDD_APPEARANCE, AppearancePageProc);
-    InitPropSheetPage(&psp[3], IDD_SETTINGS, SettingsPageProc);
+    InitPropSheetPage(&psp[0], IDD_BACKGROUND, (DLGPROC) BackgroundPageProc);
+    InitPropSheetPage(&psp[1], IDD_SCREENSAVER, (DLGPROC) ScreenSaverPageProc);
+    InitPropSheetPage(&psp[2], IDD_APPEARANCE, (DLGPROC) AppearancePageProc);
+    InitPropSheetPage(&psp[3], IDD_SETTINGS, (DLGPROC) SettingsPageProc);
     
     return (LONG)(PropertySheet(&psh) != -1);
 }
diff --git a/reactos/dll/cpl/desk/settings.c b/reactos/dll/cpl/desk/settings.c
index f7a38d8b8c7..8f1632a2f78 100644
--- a/reactos/dll/cpl/desk/settings.c
+++ b/reactos/dll/cpl/desk/settings.c
@@ -69,7 +69,7 @@ UpdateDisplay(IN HWND hwndDlg)
 		}
 	}
 	if (LoadString(hApplet, (2900 + CurrentDisplayDevice->CurrentSettings->dmBitsPerPel), Buffer, sizeof(Buffer) / sizeof(TCHAR)))
-		SendDlgItemMessage(hwndDlg, IDC_SETTINGS_BPP, CB_SELECTSTRING, -1, (LPARAM)Buffer);
+		SendDlgItemMessage(hwndDlg, IDC_SETTINGS_BPP, CB_SELECTSTRING, (WPARAM)-1, (LPARAM)Buffer);
 }
 
 static PSETTINGS_ENTRY