[JWait]

Well, the payment methods are in a loop in the Fast_Lane_Checkout module, and the text is displayed using the {$payment.payment_details} variable. You can add an image in checkout _2_method.tpl, but I think you would need to add another loop with a "if" to display the "credit cards" image only where it applies, and I have no idea what the correct payment.payment_details variable is. I don't think you can get a individual image to display for each credit card easily though since it is from a pulldown menu in checkout _3_place.tpl.