Phew! I resolved the issue using the following:
Edit: skin1/customer/main/cart_totals.tpl
Add the following code wherever you want the special handling charge to be displayed within the cart totals:
Code:
{if $cart.display_handling_special gt 0}
<TR> <TD nowrap> <FONT class="ProductTitle">{$lng.lbl_handling_special}:</FONT></TD>
<TD><IMG src="{$ImagesDir}/null.gif" width="5" height="1" alt=""><BR></TD>
<TD nowrap align="right"><FONT class="ProductPriceSmall">{include file="currency.tpl"
value=$cart.display_handling_special}</FONT></TD> <TD nowrap align="right"></TD> </TR> {/if}
--- ALSO ---
Edit: skin1/mail/html/order_data.tpl
Add this code above the line showing shipping cost: (This will show special handling charge in emails and invoices that are sent to customer and administrator.)
Code:
{if $order.display_handling_special gt 0}
<tr>
<td align="right" height="20"><b>{$lng.lbl_handling_special}:</b> </td>
<td align="right">{include file="currency.tpl" value=$order.display_handling_special} </td>
</tr>
{/if}