How to send password in email body
Store user_password() in a variable. Change your code to this

    function lawyer_register_form_submit($form, &amp;$form_submit)
    {
     $new_password = user_password();
     $edit = array(
      'name' =&gt; $form_submit['values']['name'],
      'pass' =&gt; $new_password,
      'mail' =&gt; $form_submit['values']['mail'],
      'init' =&gt; $form_submit['values']['mail'],
      'status' =&gt; 1,
      'access' =&gt; REQUEST_TIME,
      'fname' =&gt; array(LANGUAGE_NONE =&gt; array(array('value' =&gt; $form_submit['values']   ['fname']))),
      'street_address' =&gt; array(LANGUAGE_NONE =&gt; array(array('value' =&gt;  $form_submit['values']['street_address']))),
      'phone_no' =&gt; array(LANGUAGE_NONE =&gt; array(array('value' =&gt; $form_submit['values'] ['phone_no']))),
      'county' =&gt; array(LANGUAGE_NONE =&gt; array(array('value' =&gt; $form_submit['values'] ['county']))),
      );
      $to = $form_submit['values']['mail'];
      $subject = 'New account created';
      $headers = "From: something@somewhere.org\nContent-type: text/html";
      $body = 'A new user account has been created for you at &lt;a  href="http://something.org/"&gt;Something.org&lt;/a&gt;.&lt;br /&gt; Your login details are as follows:&lt;br /&gt;Username: &lt;b&gt;'.$form_submit['values']['name'].'&lt;/b&gt;&lt;br /&gt; Password: &lt;b&gt;'$new_password'&lt;/b&gt; &lt;br /&gt;&lt;br /&gt; Please login to &lt;a  href="http://us.lawandmoney.info"&gt;Lawandmoney.org&lt;/a&gt; and change your password.&lt;br /&gt;';
       if($form_submit['values']['send_message'] == 1){
         mail($to,$subject,$body,$headers);
         } 
       user_save(drupal_anonymous_user(), $edit);
       drupal_set_message("Successfully Register. Please check your Email for login    deatils.");

     }