diff --git a/src/d_main.cpp b/src/d_main.cpp
index 2b8ff7437..1ea2d2707 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -205,7 +205,10 @@ CUSTOM_CVAR (String, vid_cursor, "None", CVAR_ARCHIVE | CVAR_NOINITCALL)
 	}
 }
 
-bool disableautoload = false;	// [SP] No auto load
+// Controlled by startup dialog
+CVAR (Bool, disableautoload, false, CVAR_ARCHIVE | CVAR_NOINITCALL | CVAR_GLOBALCONFIG)
+CVAR (Bool, autoloadbrightmaps, false, CVAR_ARCHIVE | CVAR_NOINITCALL | CVAR_GLOBALCONFIG)
+CVAR (Bool, autoloadlights, false, CVAR_ARCHIVE | CVAR_NOINITCALL | CVAR_GLOBALCONFIG)
 
 bool wantToRestart;
 bool DrawFSHUD;				// [RH] Draw fullscreen HUD?
@@ -2040,6 +2043,23 @@ static void AddAutoloadFiles(const char *autoname)
 {
 	LumpFilterIWAD.Format("%s.", autoname);	// The '.' is appened to simplify parsing the string 
 
+	// [SP] Dialog reaction - load lights.pk3 and brightmaps.pk3 based on user choices
+	if (!(gameinfo.flags & GI_SHAREWARE))
+	{
+		if (autoloadlights)
+		{
+			const char *lightswad = BaseFileSearch ("lights.pk3", NULL);
+			if (lightswad)
+				D_AddFile (allwads, lightswad);
+		}
+		if (autoloadbrightmaps)
+		{
+			const char *bmwad = BaseFileSearch ("brightmaps.pk3", NULL);
+			if (bmwad)
+				D_AddFile (allwads, bmwad);
+		}
+	}
+
 	if (!(gameinfo.flags & GI_SHAREWARE) && !Args->CheckParm("-noautoload") && !disableautoload)
 	{
 		FString file;
diff --git a/src/win32/i_system.cpp b/src/win32/i_system.cpp
index 2dc6c4d3d..f07fb8f1d 100644
--- a/src/win32/i_system.cpp
+++ b/src/win32/i_system.cpp
@@ -141,7 +141,9 @@ EXTERN_CVAR (Bool, queryiwad);
 // Used on welcome/IWAD screen.
 EXTERN_CVAR (Int, vid_renderer)
 EXTERN_CVAR (Bool, fullscreen)
-extern bool disableautoload;
+EXTERN_CVAR (Bool, disableautoload)
+EXTERN_CVAR (Bool, autoloadlights)
+EXTERN_CVAR (Bool, autoloadbrightmaps)
 
 extern HWND Window, ConWindow, GameTitleWindow;
 extern HANDLE StdOut;
@@ -1181,7 +1183,11 @@ BOOL CALLBACK IWADBoxCallback(HWND hDlg, UINT message, WPARAM wParam, LPARAM lPa
 		// Check the current video settings.
 		SendDlgItemMessage( hDlg, vid_renderer ? IDC_WELCOME_OPENGL : IDC_WELCOME_SOFTWARE, BM_SETCHECK, BST_CHECKED, 0 );
 		SendDlgItemMessage( hDlg, IDC_WELCOME_FULLSCREEN, BM_SETCHECK, fullscreen ? BST_CHECKED : BST_UNCHECKED, 0 );
+
+		// [SP] This is our's
 		SendDlgItemMessage( hDlg, IDC_WELCOME_NOAUTOLOAD, BM_SETCHECK, disableautoload ? BST_CHECKED : BST_UNCHECKED, 0 );
+		SendDlgItemMessage( hDlg, IDC_WELCOME_LIGHTS, BM_SETCHECK, autoloadlights ? BST_CHECKED : BST_UNCHECKED, 0 );
+		SendDlgItemMessage( hDlg, IDC_WELCOME_BRIGHTMAPS, BM_SETCHECK, autoloadbrightmaps ? BST_CHECKED : BST_UNCHECKED, 0 );
 
 		// Set up our version string.
 		sprintf(szString, "Version %s.", GetVersionString());
@@ -1226,7 +1232,8 @@ BOOL CALLBACK IWADBoxCallback(HWND hDlg, UINT message, WPARAM wParam, LPARAM lPa
 
 			// [SP] This is our's.
 			disableautoload = SendDlgItemMessage( hDlg, IDC_WELCOME_NOAUTOLOAD, BM_GETCHECK, 0, 0 ) == BST_CHECKED;
-
+			autoloadlights = SendDlgItemMessage( hDlg, IDC_WELCOME_LIGHTS, BM_GETCHECK, 0, 0 ) == BST_CHECKED;
+			autoloadbrightmaps = SendDlgItemMessage( hDlg, IDC_WELCOME_BRIGHTMAPS, BM_GETCHECK, 0, 0 ) == BST_CHECKED;
 			ctrl = GetDlgItem (hDlg, IDC_IWADLIST);
 			EndDialog(hDlg, SendMessage (ctrl, LB_GETCURSEL, 0, 0));
 		}
diff --git a/src/win32/resource.h b/src/win32/resource.h
index 937a73658..cf41b6f1f 100644
--- a/src/win32/resource.h
+++ b/src/win32/resource.h
@@ -158,7 +158,7 @@
 // 
 #ifdef APSTUDIO_INVOKED
 #ifndef APSTUDIO_READONLY_SYMBOLS
-#define _APS_NEXT_RESOURCE_VALUE        150
+#define _APS_NEXT_RESOURCE_VALUE        151
 #define _APS_NEXT_COMMAND_VALUE         40001
 #define _APS_NEXT_CONTROL_VALUE         1084
 #define _APS_NEXT_SYMED_VALUE           101
@@ -170,7 +170,8 @@
 #define IDC_WELCOME_OPENGL				4020
 #define IDC_WELCOME_SOFTWARE			4021
 #define IDC_WELCOME_FULLSCREEN			4022
-#define IDI_ICONST			151
 
 // [SP] This is our's.
 #define IDC_WELCOME_NOAUTOLOAD			4023
+#define IDC_WELCOME_LIGHTS              4024
+#define IDC_WELCOME_BRIGHTMAPS          4025
diff --git a/src/win32/zdoom.rc b/src/win32/zdoom.rc
index c5c7bd259..99422e4ad 100644
--- a/src/win32/zdoom.rc
+++ b/src/win32/zdoom.rc
@@ -120,9 +120,9 @@ BEGIN
     IDD_IWADDIALOG, DIALOG
     BEGIN
         LEFTMARGIN, 5
-        RIGHTMARGIN, 205
+        RIGHTMARGIN, 222
         TOPMARGIN, 7
-        BOTTOMMARGIN, 179
+        BOTTOMMARGIN, 242
     END
 
     IDD_EAXPROPERTYLIST, DIALOG
@@ -237,33 +237,28 @@ END
 */
 // [SP] Upstreamed from Zandronum
 IDD_IWADDIALOG DIALOGEX 0, 0, 224, 246
-STYLE DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | 
-    WS_SYSMENU
+STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
 EXSTYLE WS_EX_APPWINDOW
 CAPTION "Welcome"
 FONT 8, "MS Shell Dlg", 0, 0, 0x1
 BEGIN
-	ICON            IDI_ICON1,IDC_STATIC,7,7,32,32
-	LTEXT           "Welcome to QZDoom!",IDC_STATIC,42,8,180,8
-	LTEXT           "<Version info>",IDC_WELCOME_VERSION,42,18,180,8
-	GROUPBOX        "IWAD selection",IDC_STATIC,8,32,224-16,102
-	LTEXT           "Select which game file (IWAD) to run.", IDC_STATIC,12,32+12,190,8
-    LISTBOX         IDC_IWADLIST,12,32+24,224-24,72,LBS_NOINTEGRALHEIGHT | 
-                    WS_VSCROLL | WS_TABSTOP
-	GROUPBOX        "Video settings",IDC_STATIC,8,138,224-16,48
-	LTEXT           "Choose how QZDoom will render the game.", IDC_STATIC,12,148,190,8
-	CONTROL         "Hardware (OpenGL)",IDC_WELCOME_OPENGL,"Button",
-                    BS_AUTORADIOBUTTON,12,170,93,10
-	CONTROL         "Software (Doom)",IDC_WELCOME_SOFTWARE,"Button",
-                    BS_AUTORADIOBUTTON,12,160,93,10
-	CONTROL         "Fullscreen",IDC_WELCOME_FULLSCREEN,"Button",
-                    BS_AUTOCHECKBOX | WS_TABSTOP, 124,160,48,10
-	CONTROL "Disable autoload",IDC_WELCOME_NOAUTOLOAD,"Button",
-                    BS_AUTOCHECKBOX | WS_TABSTOP,72,192,87,10
-	CONTROL "Don't ask me this again",IDC_DONTASKIWAD,"Button",
-                    BS_AUTOCHECKBOX | WS_TABSTOP,72,202,87,10
-	DEFPUSHBUTTON "Play QZDoom",IDOK,8,246-18,90,14
-	PUSHBUTTON "Exit",IDCANCEL,224-58,246-18,50,14
+    ICON            IDI_ICON1,IDC_STATIC,7,7,21,20
+    LTEXT           "Welcome to QZDoom!",IDC_STATIC,42,8,180,8
+    LTEXT           "<Version info>",IDC_WELCOME_VERSION,42,18,180,8
+    GROUPBOX        "IWAD selection",IDC_STATIC,8,32,208,102
+    LTEXT           "Select which game file (IWAD) to run.",IDC_STATIC,12,44,190,8
+    LISTBOX         IDC_IWADLIST,12,56,200,72,LBS_NOINTEGRALHEIGHT | WS_VSCROLL | WS_TABSTOP
+    GROUPBOX        "Video settings",IDC_STATIC,8,138,208,48
+    LTEXT           "Choose how QZDoom will render the game.",IDC_STATIC,12,148,190,8
+    CONTROL         "Hardware (OpenGL)",IDC_WELCOME_OPENGL,"Button",BS_AUTORADIOBUTTON,12,170,93,10
+    CONTROL         "Software (Doom)",IDC_WELCOME_SOFTWARE,"Button",BS_AUTORADIOBUTTON,12,160,93,10
+    CONTROL         "Fullscreen",IDC_WELCOME_FULLSCREEN,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,124,160,48,10
+    CONTROL         "Disable autoload",IDC_WELCOME_NOAUTOLOAD,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,148,39,65,10
+    CONTROL         "Lights.pk3",IDC_WELCOME_LIGHTS,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,46,192,51,10
+    CONTROL         "Brightmaps.pk3",IDC_WELCOME_BRIGHTMAPS,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,111,192,65,10
+    CONTROL         "Don't ask me this again",IDC_DONTASKIWAD,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,73,211,87,10
+    DEFPUSHBUTTON   "Play QZDoom",IDOK,8,228,90,14
+    PUSHBUTTON      "Exit",IDCANCEL,166,228,50,14
 END
 
 IDD_EAXPROPERTYLIST DIALOGEX 0, 0, 265, 404