Missing coupon field in cart/checkout process

Question

I have added coupon code for free shipping in the Shopping Cart Price Rules (Magento 1.4.1.1), but I don't see any coupon code field in a cart or checkout process.

I have checked checkout.xml file and proper line exists

<block type="checkout/cart_coupon" name="checkout.cart.coupon" as="coupon" template="checkout/cart/coupon.phtml"/>

Edit:

It looks like coupon functionality was removed from coupon.phtml file, which contains now only

<!-- coupon code removed-->

Can someone could to provide proper file for that Magento version?

Thanks