Change final button to Submit Order in checkout

I have my checkout process using the following workflow:

login,cart_coupon,address,confirm_cart,end

My store has no prices, as it is a b2b store with our clients. When someone gets to the last step in the checkout process (confirm_cart), I would like the "Next" button to change to "Submit Order". Is that possible? If so, how?

I found this section of code in the 'step' view:

if($this->nextButton){
			echo $this->cart->displayButton(JText::_('NEXT'),'next',$this->params,hikashop::completeLink('checkout&task=step&step='.$this->step+1),'if(hikashopCheckChangeForm(\'order\',\'hikashop_checkout_form\'))document.forms[\'hikashop_checkout_form\'].submit(); return false;','id="hikashop_checkout_next_button"');
		}

Thanks for the usual level of prompt service!!! I tried searching the forum - REALLY - before posting!

Nicolas,

The code worked PERFECTLY!! Thanks!

As an aside, is there any way to add a "Back" button into the step process in checkout? I know a user can click on the progress bar at the top to go back, but the button may be more intuitive.

Again, thanks! I wrapped it in an IF statement so it does not show on the first step in the process, like:

if($this->step!=0){
echo $this->cart->displayButton(JText::_('BACK'),'back',$this->params,hikashop::currentUrl(),'history.back();return false;','id="hikashop_checkout_back_button"');
}