Magento sample config file

config.xml

<?xml version="1.0"?>
<config>
	<modules>
		<Xcommerce_Cse>
			<version>0.1.0</version>
		</Xcommerce_Cse>
	</modules>

	<global>
		<models>
			<Xcommerce_Cse>
				<class>Xcommerce_Cse_Model</class>
			</Xcommerce_Cse>

		</models>

		<blocks>
			<cse>
				<class>Xcommerce_Cse_Block</class>
			</cse>
		</blocks> 
		
		<helpers>
		    <cse><class>Xcommerce_Cse_Helper</class></cse>
		</helpers>

		<events>
			<catalog_product_save_after>
				<observers>
					<Xcommerce_Cse_observer>
						<class>xcommerce_cse/observer</class>
						<method>saveInventoryData</method>
					</Xcommerce_Cse_observer>
				</observers>
			</catalog_product_save_after>
		</events>

	</global>

	<adminhtml>
		<menu>
			<cse translate="title" module="cse">
				<title>Xcommerce</title>
				<sort_order>100</sort_order>

				<children>
					<newchildmenu translate="title">
						<title>Send store data to CSE</title>
						<action>cse/admin</action>
					</newchildmenu>
				</children>
			</cse>
		</menu>
	</adminhtml>

	<frontend>
		<routers>
			<Xcommerce_Cse>
				<use>standard</use>
				<args>
					<module>Xcommerce_Cse</module>
					<frontName>cse</frontName>
				</args>
			</Xcommerce_Cse>
		</routers>
	</frontend>

</config>