Django adding custom view in admin site

I am using Django 1.4. I would like to add a queue in admin page which should look like admin change_list page. I tried so many blogs and other forum, but did not get what I want. How can I add custom view in admin page with following features,

• My own queryset
• should look like admin changelist page with all features available there.

models.py

class Broker(models.Model):
    user = models.OneToOneField(User)
    agency = models.CharField(max_length=100)

urls.py

    url(r'^admin/broker_list/$', 'room.admin_views.broker_list'),
    url(r'^admin/', include(admin.site.urls)), 

admin_views.py

def broker_list(request):
    return render_to_response(
        "admin/broker_list.html",
        {'broker_list' : Broker.objects.filter(user__is_active=False)},
        RequestContext(request, {}),
    )
broker_list = staff_member_required(broker_list)

broker_list.html

{% extends "admin/base_site.html" %}
{% load admin_urls %}

{% block title %}List of pending agent{% endblock %}

{% block content %}
    {{broker_list}}
{% endblock %}

With above said code, I can able to go access the link /admin/broker_list/ where I can see the queryset. But I do not know how to generate or extend like admin chagelist page.

Even I tired with Django ModelAdmin get_urls method, but the document stated that my_view should return HttpResponse, so it renders only raw object. for the reference I shared my code below,

admin.py

class ItemAdmin(admin.ModelAdmin):
    model = Broker
    def admin_list_broker(self, request):
        print "yes iam here"
        return HttpResponse("Hello!")
        #return HttpResponseRedirect(
        #        reverse("admin:account_agent_changelist",)
        #)
    def get_urls(self):
        from django.conf.urls.defaults import *
        urls = super(ItemAdmin, self).get_urls()
        my_urls = patterns('',
            url(
                r'broker_list',
                self.admin_site.admin_view(self.admin_list_broker),
                name='admin_list_broker',
            ),
        )
        print my_urls + urls
        return my_urls + urls

admin.site.register(Broker, ItemAdmin)

Please help me to implement the requirement in anyone one above said method.

Thanks.