diff --git a/weboob/backend.py b/weboob/backend.py
index 18c5ad57..858f39cd 100644
--- a/weboob/backend.py
+++ b/weboob/backend.py
@@ -20,4 +20,14 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 """
 
 class Backend:
-    CAPS = 0
+    def __init__(self, config):
+        self.config = config
+
+    def hasCaps(self, caps):
+        if not isinstance(caps, (list,tuple)):
+            caps = (caps,)
+
+        for c in caps:
+            if isinstance(self, c):
+                return True
+        return False
diff --git a/weboob/backends/aum/backend.py b/weboob/backends/aum/backend.py
index b39e692c..2904a0b5 100644
--- a/weboob/backends/aum/backend.py
+++ b/weboob/backends/aum/backend.py
@@ -19,7 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 """
 
 from weboob.backend import Backend
-from weboob.capabilities import CAP_MAILS
+from weboob.capabilities.messages import IMessages, IMessagesReply
 
-class AuMBackend(Backend):
-    CAPS = CAP_MAILS
+class AuMBackend(Backend, IMessages, IMessagesReply):
+    pass
diff --git a/weboob/backends/dlfp/backend.py b/weboob/backends/dlfp/backend.py
index f1823dfd..c9e5493f 100644
--- a/weboob/backends/dlfp/backend.py
+++ b/weboob/backends/dlfp/backend.py
@@ -19,7 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 """
 
 from weboob.backend import Backend
-from weboob.capabilities import CAP_MAILS
+from weboob.capabilities.messages import IMessages, IMessagesReply
 
-class DLFPBackend(Backend):
-    CAPS = CAP_MAILS
+class DLFPBackend(Backend, IMessages, IMessagesReply):
+    pass
diff --git a/weboob/capabilities.py b/weboob/capabilities.py
deleted file mode 100644
index d4efe738..00000000
--- a/weboob/capabilities.py
+++ /dev/null
@@ -1,21 +0,0 @@
-# -*- coding: utf-8 -*-
-
-"""
-Copyright(C) 2010  Romain Bignon
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, version 3 of the License.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-"""
-
-CAP_MAILS =      0x00001
diff --git a/weboob/capabilities/__init__.py b/weboob/capabilities/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/weboob/modules.py b/weboob/modules.py
index c13f5481..f39d5dd2 100644
--- a/weboob/modules.py
+++ b/weboob/modules.py
@@ -20,12 +20,11 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 import re
 import os
-import sys
 from logging import warning, debug
 from types import ClassType
 
 import weboob.backends as backends
-from backend import Backend
+from weboob.backend import Backend
 
 class Module:
     def __init__(self, name, module):
@@ -41,10 +40,16 @@ class Module:
             raise ImportError("This is not a backend module (no Backend class found)")
 
     def hasCaps(self, caps):
-        return self.klass.CAPS & caps
+        if not isinstance(caps, (list,tuple)):
+            caps = (caps,)
 
-    def createBackend(self):
-        return self.klass()
+        for c in caps:
+            if issubclass(self.klass, c):
+                return True
+        return False
+
+    def createBackend(self, config):
+        return self.klass(config)
 
 class ModulesLoader:
     def __init__(self):
diff --git a/weboob/ouiboube.py b/weboob/ouiboube.py
index 4bccd464..5f4184e4 100644
--- a/weboob/ouiboube.py
+++ b/weboob/ouiboube.py
@@ -38,6 +38,19 @@ class Weboob:
         for name, module in self.modules_loader.modules.iteritems():
             if (not caps or module.hasCaps(caps)) and \
                (not name or module.name == name):
-                backend = module.createBackend()
+                backend = module.createBackend(self.config.get('backends', module.name))
                 self.backends[module.name] = backend
 
+    def loadmodule(self, modname, instname):
+        module = self.modules_loader[modname]
+        self.backends[instname] = module.createBackend(self.config.get('backends', instname))
+
+    def getBackends(self, caps=None):
+        if caps is None:
+            return self.backends
+
+        d = {}
+        for name, backend in self.backends.iteritems():
+            if backend.hasCaps(caps):
+                d[name] = backend
+        return d