Use absolute import. (Should this go into 2.5?)
diff --git a/Lib/test/test_cpickle.py b/Lib/test/test_cpickle.py
index d87decd..78beda7 100644
--- a/Lib/test/test_cpickle.py
+++ b/Lib/test/test_cpickle.py
@@ -1,7 +1,7 @@
import cPickle
import unittest
from cStringIO import StringIO
-from pickletester import AbstractPickleTests, AbstractPickleModuleTests
+from test.pickletester import AbstractPickleTests, AbstractPickleModuleTests
from test import test_support
class cPickleTests(AbstractPickleTests, AbstractPickleModuleTests):