Magento Custom Dashboard Tab - config.xml

<!--Path : app\code\local\KS\Dashboard\etc\config.xml -->

<?xml version="1.0"?>
<config>

    <modules>
        <KS_Dashboard>
            <version>0.1.0</version>
        </KS_Dashboard>
    </modules>

    <global>
        <models>
            <reports>
                <rewrite>
                    <!-- Mage_Reports_Model_Resource_Order_Collection -->
                    <resource_order_collection>KS_Dashboard_Model_Reports_Resource_Order_Collection</resource_order_collection>
                </rewrite>
            </reports>
        </models>

        <blocks>
            <adminhtml>
                <rewrite>
                    <!-- Mage_Adminhtml_Block_Dashboard_Graph -->
                    <dashboard_graph>KS_Dashboard_Block_Adminhtml_Dashboard_Graph</dashboard_graph>
                    <!-- Mage_Adminhtml_Block_Dashboard_Grids -->
                    <dashboard_grids>KS_Dashboard_Block_Adminhtml_Dashboard_Grids</dashboard_grids>
                    <!-- Mage_Adminhtml_Block_Dashboard_Totals -->
                    <dashboard_totals>KS_Dashboard_Block_Adminhtml_Dashboard_Totals</dashboard_totals>
                    <!-- Mage_Adminhtml_Block_Dashboard_Tab_Amounts -->
                    <dashboard_tab_amounts>KS_Dashboard_Block_Adminhtml_Dashboard_Tab_Amounts</dashboard_tab_amounts>
                    <!-- Mage_Adminhtml_Block_Dashboard_Tab_Orders -->
                    <dashboard_tab_orders>KS_Dashboard_Block_Adminhtml_Dashboard_Tab_Orders</dashboard_tab_orders>
                </rewrite>
            </adminhtml>
        </blocks>

        <helpers>
            <adminhtml>
                <rewrite>
                    <!-- Mage_Adminhtml_Helper_Dashboard_Data -->
                    <dashboard_data>KS_Dashboard_Helper_Adminhtml_Dashboard_Data</dashboard_data>
                </rewrite>
            </adminhtml>
        </helpers>

    </global>

    <admin>
            <routers>
                <adminhtml>
                    <args>
                        <modules>
                             <KS_Dashboard before="Mage_Adminhtml">KS_Dashboard</KS_Dashboard>
                        </modules>
                    </args>
                </adminhtml>
            </routers>
     </admin>

     <dashboard>
        <layout>
            <updates>
                <dashboard>
                    <file>main.xml</file>
                </dashboard>
            </updates>
        </layout>
     </dashboard>

</config>