How to Add Customer Group field while Create Account in magento

Here is the step by step procedure to add customer group in account registration form


Step 1: go to app/code/core/Mage/customer/etc/config.xml and add the following code

<fieldsets><customer_account>
<group_id><create>1</create><update>1</update></group_id>
</customer_account></fieldsets>

Step : 2 Now go to register.phtml which resides app/design/frontend/your_interface/Your_theme/template/customer/form/Register.phtml and write the following code under the section where you wan't to put.

<li>
<label for="customer_groups" class="required"><em>*</em><?php echo $this->__('Customer Groups') ?></label>
<select name="customer_groups" id="customer_groups" title="<?php echo $this->__('Customer Groups') ?>" class="validate-group required-entry input-text">
<?php $cu_groups = Mage::helper('customer')->getGroups()->toOptionArray(); ?>
<?php foreach($cu_groups as $cuGroups){ ?>
<option value="<?php echo $cuGroups['value'] ?>"><?php echo $cuGroups['label'] ?></option>
<?php } ?>
</select>
</li>

Step 3: open accountcontroller.php in app/code/core/mage/customer/controllers/accountcontroller.php and add the following code in the "initialize customer group id" part

<?php
$customer->setGroupId($this->getRequest()->getPost('customer_groups'));
?>

now you can get the customer group field while registering account.

Hope it Helps.. Thanks....