diff --git a/plstackapi/core/admin.py b/plstackapi/core/admin.py
index b45e571..230dbfc 100644
--- a/plstackapi/core/admin.py
+++ b/plstackapi/core/admin.py
@@ -63,6 +63,7 @@
 
 class OSModelAdmin(PlanetStackBaseAdmin):
     """Attach client connection to openstack on delete() and save()""" 
+
     def save_model(self, request, obj, form, change):
         client = OpenStackClient(tenant=request.user.site.login_base, **request.session.get('auth', {}))
         obj.driver = OpenStackDriver(client=client)
@@ -164,6 +165,17 @@
     list_display = ('name', 'site','slice_url', 'instantiation')
     inlines = [SliverInline]
 
+    def get_formsets(self, request, obj=None):
+        for inline in self.get_inline_instances(request, obj):
+            # hide MyInline in the add view
+            if obj is None:
+                continue
+            # give inline object access to driver and caller
+            client = OpenStackClient(tenant=obj.name, **request.session.get('auth', {}))
+            inline.model.driver = OpenStackDriver(client=client)
+            inline.model.caller = request.user
+            yield inline.get_formset(request, obj)
+
     def get_queryset(self, request):
         qs = super(SliceAdmin, self).get_queryset(request)
         if request.user.is_superuser:
diff --git a/plstackapi/core/api/auth.py b/plstackapi/core/api/auth.py
index 4054da6..412df00 100644
--- a/plstackapi/core/api/auth.py
+++ b/plstackapi/core/api/auth.py
@@ -1,8 +1,8 @@
 from plstackapi.openstack.client import OpenStackClient
 
-def auth_check(auth):
-    client = OpenStackClient(username=auth['Username'],
-                             password=auth['AuthString'],
-                             tenant=auth['LoginBase'])
+def auth_check(username, password, tenant):
+    client = OpenStackClient(username=username,
+                             password=password,
+                             tenant=tenant)
     client.authenticate()
     return client
diff --git a/plstackapi/core/api/slivers.py b/plstackapi/core/api/slivers.py
index da5d17f..cc45b8d 100644
--- a/plstackapi/core/api/slivers.py
+++ b/plstackapi/core/api/slivers.py
@@ -1,4 +1,5 @@
 from types import StringTypes
+from django.contrib.auth import authenticate
 from plstackapi.openstack.client import OpenStackClient
 from plstackapi.openstack.driver import OpenStackDriver
 from plstackapi.core.api.auth import auth_check
@@ -25,7 +26,7 @@
  
 def add_sliver(auth, fields):
     driver = OpenStackDriver(client = auth_check(auth))
-    
+        
     images = _get_images(fields.get('image'))
     if images: fields['image'] = images[0]     
     keys = _get_keys(fields.get('key'))
@@ -38,14 +39,7 @@
     nodes = _get_nodes(fields.get('node'))
     if nodes: fields['node'] = nodes[0]     
     sliver = Sliver(**fields)
-    # create quantum sliver
-    instance = driver.spawn_instance(name=sliver.name,
-                                   key_name = sliver.key.name,
-                                   image_id = sliver.image.image_id,
-                                   hostname = sliver.node.name )
-
-    sliver.instance_id=instance.id
-
+    sliver.driver = driver    
     sliver.save()
     return sliver
 
@@ -56,12 +50,13 @@
     driver = OpenStackDriver(client = auth_check(auth))   
     slivers = _get_slivers(filter)
     for sliver in slivers:
-        driver.destroy_instance(sliver.sliver_id) 
+        sliver.driver = driver
         sliver.delete()
     return 1
 
 def get_slivers(auth, filter={}):
-    client = auth_check(auth)
+    user = authenticate(username=auth.get('username'),
+                        password=auth.get('password'))
     if 'slice' in filter:
         slices = _get_slices(filter.get('slice'))
         if slices: filter['slice'] = slices[0]
diff --git a/plstackapi/core/serializers.py b/plstackapi/core/serializers.py
index 381db05..b4ffe68 100644
--- a/plstackapi/core/serializers.py
+++ b/plstackapi/core/serializers.py
@@ -165,6 +165,7 @@
         fields = ('id',
                   'instance_id',
                   'name',
+                  'instance_name',
                   'ip',
                   'image',
                   'key',
diff --git a/plstackapi/core/urls.py b/plstackapi/core/urls.py
index 0696c31..0c9b858 100644
--- a/plstackapi/core/urls.py
+++ b/plstackapi/core/urls.py
@@ -55,13 +55,13 @@
     url(r'^plstackapi/slice_memberships/(?P<pk>[0-9]+)/$', SliceMembershipRetrieveUpdateDestroy.as_view(), name='slice_membership-detail'),
     
     url(r'^plstackapi/subnets/$', SubnetListCreate.as_view(), name='subnet-list'),
-    url(r'^plstackapi/subnets/(?P<pk>[0-9]+)/$', SubnetRetrieveUpdateDestroy.as_view(), name='subnet-detail'),
+    url(r'^plstackapi/subnets/(?P<pk>[a-zA-Z0-9_]+)/$', SubnetRetrieveUpdateDestroy.as_view(), name='subnet-detail'),
 
     url(r'^plstackapi/slivers/$', SliverListCreate.as_view(), name='sliver-list'),
-    url(r'^plstackapi/slivers/(?P<pk>[0-9]+)/$', SliverRetrieveUpdateDestroy.as_view(), name='sliver-detail'),
+    url(r'^plstackapi/slivers/(?P<pk>[a-zA-Z0-9_]+)/$', SliverRetrieveUpdateDestroy.as_view(), name='sliver-detail'),
 
     url(r'^plstackapi/nodes/$', NodeListCreate.as_view(), name='node-list'),
-    url(r'^plstackapi/nodes/(?P<pk>[0-9]+)/$', NodeRetrieveUpdateDestroy.as_view(), name='node-detail'),
+    url(r'^plstackapi/nodes/(?P<pk>[a-zA-Z0-9_]+)/$', NodeRetrieveUpdateDestroy.as_view(), name='node-detail'),
     
     url(r'^plstackapi/deploymentnetworks/$', DeploymentNetworkListCreate.as_view(), name='deploymentnetwork-list'),
     url(r'^plstackapi/deploymentnetworks/(?P<pk>[a-zA-Z0-9]+)/$', DeploymentNetworkRetrieveUpdateDestroy.as_view(), name='deploymentnetwork-detail'),
diff --git a/plstackapi/core/views/slivers.py b/plstackapi/core/views/slivers.py
index 4063419..2f5842c 100644
--- a/plstackapi/core/views/slivers.py
+++ b/plstackapi/core/views/slivers.py
@@ -37,7 +37,7 @@
         data = parse_request(request.DATA)
         if 'auth' not in data:
             return Response(status=status.HTTP_400_BAD_REQUEST)
-        slivers = get_slivers(data['auth'], {'id': pk})
+        slivers = get_slivers(data['auth'], pk)
         if not slivers:
             return Response(status=status.HTTP_404_NOT_FOUND)
         serializer = SliverSerializer(slivers[0])
@@ -59,7 +59,7 @@
         data = parse_request(request.DATA) 
         if 'auth' not in data:
             return Response(status=status.HTTP_400_BAD_REQUEST)
-        delete_sliver(data['auth'], {'id': pk})
+        delete_sliver(data['auth'], pk)
         return Response(status=status.HTTP_204_NO_CONTENT)