diff --git a/Mac/scripts/BuildApplication.py b/Mac/scripts/BuildApplication.py
index ee82b7a..a7c8f40 100644
--- a/Mac/scripts/BuildApplication.py
+++ b/Mac/scripts/BuildApplication.py
@@ -18,6 +18,7 @@
 from Carbon import Dlg
 import EasyDialogs
 import buildtools
+import macresource
 
 # Hmmm...
 MACFREEZEPATH = os.path.join(sys.prefix, ":Mac:Tools:macfreeze")
@@ -38,13 +39,7 @@
 PPC_ONLY=1
 
 
-try:
-	Res.GetResource('DITL', DLG_ID)
-except Res.Error:
-	Res.FSpOpenResFile("BuildApplication.rsrc", 1)
-else:
-	pass # we're an applet
-
+macresource.need('DITL', DLG_ID, "BuildApplication.rsrc")
 
 def main():
 	try:
diff --git a/Mac/scripts/EditPythonPrefs.py b/Mac/scripts/EditPythonPrefs.py
index 00119e0..833e607 100644
--- a/Mac/scripts/EditPythonPrefs.py
+++ b/Mac/scripts/EditPythonPrefs.py
@@ -15,6 +15,7 @@
 import sys
 from Carbon import Res # For Res.Error
 import pythonprefs
+import macresource
 import EasyDialogs
 try:
 	from Carbon import Help
@@ -195,10 +196,7 @@
 		handler.save(result)
 
 def main():
-	try:
-		h = FSpOpenResFile('EditPythonPrefs.rsrc', 1)
-	except Res.Error:
-		pass	# Assume we already have acces to our own resource
+	macresource.need('DLOG', DIALOG_ID, 'EditPythonPrefs.rsrc')
 	
 	MacOS.SchedParams(1, 0)
 	if len(sys.argv) <= 1:
diff --git a/Mac/scripts/MkDistr_ui.py b/Mac/scripts/MkDistr_ui.py
index 3ea78a9..5386950 100644
--- a/Mac/scripts/MkDistr_ui.py
+++ b/Mac/scripts/MkDistr_ui.py
@@ -23,6 +23,7 @@
 import macfs
 import os
 import sys
+import macresource
 
 # Resource IDs
 ID_MAIN = 514
@@ -321,7 +322,7 @@
 			
 def InitUI():
 	"""Initialize stuff needed by UI (a resource file)"""
-	Res.FSpOpenResFile('MkDistr.rsrc', 1)
+	macresource.need('DLOG', ID_MAIN, 'MkDistr.rsrc', modname=__name__)
 
 class _testerhelp:
 	def __init__(self, which):
@@ -340,7 +341,7 @@
 class _test:
 	def __init__(self):
 		import sys
-		Res.FSpOpenResFile('MkDistr.rsrc', 1)
+		InitUI()
 		self.inc = _testerhelp('include')
 		self.exc = _testerhelp('exclude')
 		self.ui = MkDistrUI(self)
diff --git a/Mac/scripts/fullbuild.py b/Mac/scripts/fullbuild.py
index f5ccfc9..8954739 100644
--- a/Mac/scripts/fullbuild.py
+++ b/Mac/scripts/fullbuild.py
@@ -19,6 +19,7 @@
 import re
 import string
 import genpluginprojects
+import macresource
 
 import aetools
 from Carbon import AppleEvents
@@ -369,11 +370,7 @@
 	fp.close()
 				
 def main():
-	try:
-		h = Res.FSpOpenResFile('fullbuild.rsrc', 1)
-	except Res.Error:
-		pass	# Assume we already have acces to our own resource
-
+	macresource.need('DLOG', DIALOG_ID, 'fullbuild.rsrc')
 	dir, ok = macfs.GetDirectory('Python source folder:')
 	if not ok:
 		sys.exit(0)