diff -r bfff0679ea4c django/core/db/backends/postgresql.py
--- a/django/core/db/backends/postgresql.py	Wed Jun 20 17:03:29 2007 -0500
+++ b/django/core/db/backends/postgresql.py	Thu Jun 21 10:13:05 2007 -0500
@@ -36,10 +36,27 @@ class UnicodeCursorWrapper(object):
         self.charset = charset
 
     def execute(self, sql, params=()):
-        return self.cursor.execute(sql, [smart_basestring(p, self.charset) for p in params])
+        try:
+            params = dict([(k, smart_basestring(v, self.charset)) for (k, v) in params.items()])
+        except AttributeError:
+            params = [smart_basestring(p, self.charset) for p in params]
+        return self.cursor.execute(sql, params)
 
     def executemany(self, sql, param_list):
-        new_param_list = [tuple([smart_basestring(p, self.charset) for p in params]) for params in param_list]
+        try:
+            new_param_list = [
+                dict(
+                    [(k, smart_basestring(v, self.charset)) for (k, v) in params.items()]
+                    )
+                for params in param_list
+                ]
+        except AttributeError:
+            new_param_list = [
+                tuple(
+                    [smart_basestring(p, self.charset) for p in params]
+                    )
+                for params in param_list
+                ]
         return self.cursor.executemany(sql, new_param_list)
 
     def __getattr__(self, attr):