AbleCommerce Shopping Cart Software

My store only accept Visa and Master Card. But somehow people still think that they can use Amex.
So I would like to specify in the check out process that payment can be made by Visa or Master Card only. I would also like to change the sentences "Pay With a Credit or Debit Card" for "Pay with Visa or MasterCard" + logos and "For Discover, MasterCard, and Visa, enter last three digits on the signature strip." for "For MasterCard, and Visa, enter last three digits on the signature strip." Also I would like to remove the pic if the amex card. How can this be done ?
Thanks,
Eric

Search the text you want to change in files under website/checkout/*.ascx files. For example for credit card related text changes look in CreditCardPaymentForm.ascx file.