How to add image to checkout_payment page?

I just want to add this 2checkout image link along with my installed 2co payment (radio button) method to above mentioned page

<a href="http://www.2checkout.com"><img src="http://www.2checkout.com/images/paymentlogoshorizontal.png" alt="2Checkout.com is a worldwide leader in online payment services" /></a>


I'll Be Appreciated