diff --git a/paramiko/sftp_server.py b/paramiko/sftp_server.py
index 0c122f7..86faad3 100644
--- a/paramiko/sftp_server.py
+++ b/paramiko/sftp_server.py
@@ -96,6 +96,7 @@ class SFTPServer (BaseSFTP, SubsystemHandler):
 
     def finish_subsystem(self):
         self.server.session_ended()
+        super(SFTPServer, self).finish_subsystem()
         # close any file handles that were left open (so we can return them to the OS quickly)
         for f in self.file_table.itervalues():
             f.close()
@@ -141,10 +142,12 @@ class SFTPServer (BaseSFTP, SubsystemHandler):
         @param attr: attributes to change.
         @type attr: L{SFTPAttributes}
         """
-        if attr._flags & attr.FLAG_PERMISSIONS:
-            os.chmod(filename, attr.st_mode)
-        if attr._flags & attr.FLAG_UIDGID:
-            os.chown(filename, attr.st_uid, attr.st_gid)
+        if sys.platform != 'win32':
+            # mode operations are meaningless on win32
+            if attr._flags & attr.FLAG_PERMISSIONS:
+                os.chmod(filename, attr.st_mode)
+            if attr._flags & attr.FLAG_UIDGID:
+                os.chown(filename, attr.st_uid, attr.st_gid)
         if attr._flags & attr.FLAG_AMTIME:
             os.utime(filename, (attr.st_atime, attr.st_mtime))
         if attr._flags & attr.FLAG_SIZE:
diff --git a/paramiko/sftp_si.py b/paramiko/sftp_si.py
index bcda61c..4f0fc61 100644
--- a/paramiko/sftp_si.py
+++ b/paramiko/sftp_si.py
@@ -271,9 +271,13 @@ class SFTPServerInterface (object):
         The default implementation returns C{os.path.normpath('/' + path)}.
         """
         if os.path.isabs(path):
-            return os.path.normpath(path)
+            out = os.path.normpath(path)
         else:
-            return os.path.normpath('/' + path)
+            out = os.path.normpath('/' + path)
+        if sys.platform == 'win32':
+            # on windows, normalize backslashes to sftp/posix format
+            out = out.replace('\\', '/')
+        return out
     
     def readlink(self, path):
         """
diff --git a/tests/test_sftp.py b/tests/test_sftp.py
index 34690ab..6172a0d 100755
--- a/tests/test_sftp.py
+++ b/tests/test_sftp.py
@@ -289,7 +289,11 @@ class SFTPTest (unittest.TestCase):
             stat = sftp.stat(FOLDER + '/special')
             sftp.chmod(FOLDER + '/special', (stat.st_mode & ~0777) | 0600)
             stat = sftp.stat(FOLDER + '/special')
-            self.assertEqual(stat.st_mode & 0777, 0600)
+            expected_mode = 0600
+            if sys.platform == 'win32':
+                # chmod not really functional on windows
+                expected_mode = 0666
+            self.assertEqual(stat.st_mode & 0777, expected_mode)
             self.assertEqual(stat.st_size, 1024)
 
             mtime = stat.st_mtime - 3600
@@ -321,7 +325,12 @@ class SFTPTest (unittest.TestCase):
             stat = f.stat()
             f.chmod((stat.st_mode & ~0777) | 0600)
             stat = f.stat()
-            self.assertEqual(stat.st_mode & 0777, 0600)
+
+            expected_mode = 0600
+            if sys.platform == 'win32':
+                # chmod not really functional on windows
+                expected_mode = 0666
+            self.assertEqual(stat.st_mode & 0777, expected_mode)
             self.assertEqual(stat.st_size, 1024)
 
             mtime = stat.st_mtime - 3600
@@ -394,6 +403,10 @@ class SFTPTest (unittest.TestCase):
         """
         create a symlink and then check that lstat doesn't follow it.
         """
+        if not hasattr(os, "symlink"):
+            # skip symlink tests on windows
+            return
+
         f = sftp.open(FOLDER + '/original.txt', 'w')
         try:
             f.write('original\n')
@@ -535,7 +548,7 @@ class SFTPTest (unittest.TestCase):
         
         localname = os.tempnam()
         text = 'All I wanted was a plastic bunny rabbit.\n'
-        f = open(localname, 'w')
+        f = open(localname, 'wb')
         f.write(text)
         f.close()
         sftp.put(localname, FOLDER + '/bunny.txt')
@@ -548,7 +561,7 @@ class SFTPTest (unittest.TestCase):
         localname = os.tempnam()
         sftp.get(FOLDER + '/bunny.txt', localname)
         
-        f = open(localname, 'r')
+        f = open(localname, 'rb')
         self.assertEquals(text, f.read(128))
         f.close()
     
@@ -574,6 +587,7 @@ class SFTPTest (unittest.TestCase):
             sum = f.check('md5', 0, 0, 510)
             self.assertEquals('EB3B45B8CD55A0707D99B177544A319F373183D241432BB2157AB9E46358C4AC90370B5CADE5D90336FC1716F90B36D6',
                               paramiko.util.hexify(sum))
+            f.close()
         finally:
             sftp.unlink(FOLDER + '/kitty.txt')