title: Get customer details in backend admin panel order
body: <p>What I have done:</p>
  
  <p>I have few custom calculations to be done after placing an order for the customer in magento admin panel. I have hooked on to sales_order_save_after event inside  tab inside my module's config.xml . </p>
  
  <p>The Problem:</p>
  
  <p>I need to get the customer_id of the actual customer for whom the order is been placed on the backend. How can this be done?</p>
  
  <pre><code>$_customer = Mage::getSingleton('customer/session')-&gt;getCustomer();
  $customer_id=$_customer-&gt;getId(); 
  </code></pre>
  
  <p>The above will give me the customer_id in case of front end, I need a way to get the customer's id when ordering from backend.</p>
  
  <p>In case, the event "adminhtml_sales_order_create_process_data", is what I need to hook on, do let me know. because I am also kind of confused about which event to hook on. </p>
  
  <p>Help me out.</p>