How to insert a certain class/style into the code behind logic to genarate a RadioButtonList?

Hi,
This is a rather tricky question - I need to upgrade the UI for an existing web forms application. The new UI for the radio button does not work with <asp:RadioButtonList>. below is the ONLY html that will make the radio button style work:
<label class="radio-inline">          <input type="radio" runat="server" id="rdCreditCard" name="paymentType" value="Credit Card"  />          <span></span>Credit Card  <!--**** NOTE: <span></span> must be included for custom radio buttons ****-->  </label>
So, what I have to do so far with any page with a <asp:RadioButtonList> is to:  1) remove the <asp:RadioButtonList>; 2) write it into plain <input type="radio" ...& ...