Magento: Skip Shipping Method from onepage checkout

(Tried for comm. ver. 1.5.1.0)

First override following files(i.e. in local directory) rather than changing the core:
1) app/code/core/Mage/Checkout/Block/Onepage/Onepage.php
2) app/code/core/mage/checkout/controller/Onepagecontrollers.php
3) app/code/core/Mage/Sales/Model/Service/Quote.php
4) app/design/frontend/base/default/template/checkout/onepage/progress.phtml
5) app/code/core/Mage/Sales/Model/Service/Quote.php

Once done follow the below steps:

Step 1: app/code/local/Mage/Checkout/Block/Onepage/Onepage.php

Change the line:
$stepCodes = array('billing', 'shipping', 'shipping_method', 'payment', 'review');

with:
$stepCodes = array('billing', 'shipping', 'payment', 'review');


Step 2: app/code/local/Mage/Checkout/controller/Onepagecontrollers.php

Change the line:
protected $_sectionUpdateFunctions = array(
'payment-method' => '_getPaymentMethodsHtml',
'shpping-method' => '_getShippingMeghtoHtml',
'review' => '_getReviewHtml',
);

with:
protected $_sectionUpdateFunctions = array(
'payment-method' => '_getPaymentMethodsHtml',
'review' => '_getReviewHtml',
);


Step 3: app/code/local/Mage/Checkout/controller/Onepagecontrollers.php

Change saveBillingAction() function with:

public function saveBillingAction()
{
if ($this->_expireAjax()) {
return;
}
if ($this->getRequest()->isPost()) {
$postData = $this->getRequest()->getPost('billing', array());
$data = $this->_filterPostData($postData);
$data = $this->getRequest()->getPost('billing', array());
$customerAddressId = $this->getRequest()->getPost('billing_address_id', false);

if (isset($data['email'])) {
$data['email'] = trim($data['email']);
}
$result = $this->getOnepage()->saveBilling($data, $customerAddressId);

if (!isset($result['error'])) {
/* check quote for virtual */
if ($this->getOnepage()->getQuote()->isVirtual()) {
$result['goto_section'] = 'payment';
$result['update_section'] = array(
'name' => 'payment-method',
'html' => $this->_getPaymentMethodsHtml()
);
} elseif (isset($data['use_for_shipping']) && $data['use_for_shipping'] == 1) {
$result['goto_section'] = 'payment';
$result['update_section'] = array(
'name' => 'payment-method',
'html' => $this->_getPaymentMethodsHtml()
);

$result['allow_sections'] = array('shipping');
$result['duplicateBillingInfo'] = 'true';
} else {
$result['goto_section'] = 'shipping';
}
}

$this->getResponse()->setBody(Mage::helper('core')->jsonEncode($result));
}
}

Change saveShippingAction() function with:

public function saveShippingAction()
{
if ($this->_expireAjax()) {
return;
}
if ($this->getRequest()->isPost()) {
$data = $this->getRequest()->getPost('shipping', array());
$customerAddressId = $this->getRequest()->getPost('shipping_address_id', false);
$result = $this->getOnepage()->saveShipping($data, $customerAddressId);

if (!isset($result['error'])) {
$result['goto_section'] = 'payment';
$result['update_section'] = array(
'name' => 'payment-method',
'html' => $this->_getPaymentMethodsHtml()
);
}
$this->getResponse()->setBody(Mage::helper('core')->jsonEncode($result));
}
}

Step 4: app/code/local/Mage/Sales/Model/Service/Quote.php

Change _validate() function with:

protected function _validate()
{
$helper = Mage::helper('sales');
if (!$this->getQuote()->isVirtual()) {
$address = $this->getQuote()->getShippingAddress();
$addressValidation = $address->validate();
if ($addressValidation !== true) {
Mage::throwException(
$helper->__('Please check shipping address information. %s', implode(' ', $addressValidation))
);
}
}

$addressValidation = $this->getQuote()->getBillingAddress()->validate();
if ($addressValidation !== true) {
Mage::throwException(
$helper->__('Please check billing address information. %s', implode(' ', $addressValidation))
);
}

if (!($this->getQuote()->getPayment()->getMethod())) {
Mage::throwException($helper->__('Please select a valid payment method.'));
}

return $this;
}


Step 5: app/design/frontend/default/default/template/checkout/onepage/progress.phtml

Remove the shipping method block.

Step 6: app/locale/en_US/template/email/sales/order_new.html

Remove the shipping method block(i.e. {{var order.getShippingDescription()}}).


Hope this help!
Njoy!