diff --git a/lib/core/common.py b/lib/core/common.py
index d7567ef05..293600e2a 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -43,7 +43,7 @@ from lib.core.data import paths
 from lib.core.data import queries
 from lib.core.data import temp
 from lib.core.exception import sqlmapFilePathException
-from lib.core.settings import PLATFORM
+from lib.core.settings import IS_WIN
 from lib.core.settings import SQL_STATEMENTS
 from lib.core.settings import VERSION_STRING
 
@@ -832,7 +832,7 @@ def searchEnvPath(fileName):
     envPaths = os.environ["PATH"]
     result   = None
 
-    if "darwin" not in PLATFORM and "win" in PLATFORM:
+    if IS_WIN is True:
         envPaths = envPaths.split(";")
     else:
         envPaths = envPaths.split(":")
diff --git a/lib/core/option.py b/lib/core/option.py
index 501219473..188a98518 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -55,6 +55,7 @@ from lib.core.exception import sqlmapUnsupportedDBMSException
 from lib.core.optiondict import optDict
 from lib.core.settings import MSSQL_ALIASES
 from lib.core.settings import MYSQL_ALIASES
+from lib.core.settings import IS_WIN
 from lib.core.settings import PLATFORM
 from lib.core.settings import SITE
 from lib.core.settings import SUPPORTED_DBMS
@@ -267,6 +268,26 @@ def __setMetasploit():
     if not conf.osPwn and not conf.osSmb and not conf.osBof:
         return
 
+    debugMsg = "setting the takeover out-of-band functionality"
+    logger.debug(debugMsg)
+
+    msfEnvPathExists = False
+
+    if IS_WIN is True:
+        warnMsg  = "Metasploit's msfconsole and msfcli are not supported "
+        warnMsg += "on the native Windows Ruby interpreter. Please "
+        warnMsg += "install Metasploit, Python interpreter and sqlmap on "
+        warnMsg += "Cygwin or use Linux in VMWare to use sqlmap takeover "
+        warnMsg += "out-of-band features. sqlmap will now continue "
+        warnMsg += "without calling any takeover feature"
+        logger.warn(warnMsg)
+
+        conf.osPwn = None
+        conf.osSmb = None
+        conf.osBof = None
+
+        return
+
     if conf.osSmb:
         isAdmin = False
 
@@ -276,7 +297,7 @@ def __setMetasploit():
             if isinstance(isAdmin, (int, float, long)) and isAdmin == 0:
                 isAdmin = True
 
-        elif "win" in PLATFORM:
+        elif IS_WIN is True:
             isAdmin = ctypes.windll.shell32.IsUserAnAdmin()
 
             if isinstance(isAdmin, (int, float, long)) and isAdmin == 1:
@@ -292,18 +313,13 @@ def __setMetasploit():
 
             isAdmin = True
 
-        if isAdmin != True:
-            errMsg  = "you need to run sqlmap as an administrator/root "
+        if isAdmin is not True:
+            errMsg  = "you need to run sqlmap as an Administrator/root "
             errMsg += "user if you want to perform a SMB relay attack "
             errMsg += "because it will need to listen on a user-specified "
             errMsg += "SMB TCP port for incoming connection attempts"
             raise sqlmapMissingPrivileges, errMsg
 
-    debugMsg = "setting the out-of-band functionality"
-    logger.debug(debugMsg)
-
-    msfEnvPathExists = False
-
     if conf.msfPath:
         condition  = os.path.exists(os.path.normpath(conf.msfPath))
         condition &= os.path.exists(os.path.normpath("%s/msfcli" % conf.msfPath))
@@ -337,7 +353,7 @@ def __setMetasploit():
 
         envPaths = os.environ["PATH"]
 
-        if "darwin" not in PLATFORM and "win" in PLATFORM:
+        if IS_WIN is True:
             envPaths = envPaths.split(";")
         else:
             envPaths = envPaths.split(":")
diff --git a/lib/core/readlineng.py b/lib/core/readlineng.py
index f5b7aaa69..3a1827a02 100644
--- a/lib/core/readlineng.py
+++ b/lib/core/readlineng.py
@@ -32,6 +32,7 @@ boolean and _outputfile variable used in genutils.
 import sys
 
 from lib.core.data import logger
+from lib.core.settings import IS_WIN
 from lib.core.settings import PLATFORM
 
 
@@ -49,7 +50,7 @@ except ImportError:
     except ImportError:    
         haveReadline = False
 
-if 'win' in PLATFORM and 'darwin' not in PLATFORM and haveReadline:
+if IS_WIN is True and haveReadline:
     try:
         _outputfile=_rl.GetOutputFile()
     except AttributeError:
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 690a7df7c..19eb66f22 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -25,11 +25,12 @@ Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 
 import logging
+import subprocess
 import sys
 
 
 # sqlmap version and site
-VERSION            = "0.7rc2"
+VERSION            = "0.7rc3"
 VERSION_STRING     = "sqlmap/%s" % VERSION
 SITE               = "http://sqlmap.sourceforge.net"
 
@@ -46,6 +47,7 @@ LOGGER.addHandler(LOGGER_HANDLER)
 LOGGER.setLevel(logging.WARN)
 
 # System variables
+IS_WIN             = subprocess.mswindows
 PLATFORM           = sys.platform.lower()
 PYVERSION          = sys.version.split()[0]
 
diff --git a/lib/core/subprocessng.py b/lib/core/subprocessng.py
index 50024d4b7..5a574aadb 100644
--- a/lib/core/subprocessng.py
+++ b/lib/core/subprocessng.py
@@ -24,17 +24,21 @@ Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 
 
-import fcntl
 import errno
 import os
 import sys
 import time
 
+from lib.core.settings import IS_WIN
 
-if (sys.hexversion >> 16) >= 0x202:
-    FCNTL = fcntl
-else:
-    import FCNTL
+
+if IS_WIN is not True:
+    import fcntl
+
+    if (sys.hexversion >> 16) >= 0x202:
+        FCNTL = fcntl
+    else:
+        import FCNTL
 
 
 def blockingReadFromFD(fd):
@@ -84,6 +88,7 @@ def setNonBlocking(fd):
     Make a file descriptor non-blocking
     """
 
-    flags = fcntl.fcntl(fd, FCNTL.F_GETFL)
-    flags = flags | os.O_NONBLOCK
-    fcntl.fcntl(fd, FCNTL.F_SETFL, flags)
+    if IS_WIN is not True:
+        flags = fcntl.fcntl(fd, FCNTL.F_GETFL)
+        flags = flags | os.O_NONBLOCK
+        fcntl.fcntl(fd, FCNTL.F_SETFL, flags)