I would like to have the button for vouchers go to a specific affiliate link instead of to a particular product. That link is usually included in the voucher feeds I have set up. I tried the mod you suggested of using the description field for the link, but that's just not working for me because some vouchers need the description field as well.
I'm assuming I would need to add a field to one or more of the database tables and then modify some backend pages and the voucher display page, but I'm not quite sure how to proceed. I'm hoping you can help.