Coupon code upload tool

I currently have a daily deal site that is written in Yii Framework. What I need done is the ability to upload coupon codes given to me by my advertisers to there deals and this tool needs to be accessible through the admin panel. Right now the system generates random codes and applies them to the coupon the consumer receives So the new system should take the uploaded codes and post them to the coupon couponic is the name of the company that developed the initial program and they are not able to create this option for me Price is negotiable, based on time to complete and also experience with YII frame work