Write some Software

I have recently purchased Ontraport the auto responder to gather leads from my website. I also have another database of current clients on another autorepsonder – gCast - which runs through my reservation system in my store (a hairdressing salon). gCast is the default auto responder attached to my reservation system but it has limited functionality. What I need is some code I guess to allow Ontraport to extract the database information from gCast through it's API and to update it on a daily basis as I get new clients in the store each day. I would ideally like to manage my list from one place – Ontraport. I only need to information to go one-way - from gCast to Ontraport, and I would like to extract as much of the data as possible. It would have to be done automatically on a daily basis as new clients are coming into the salon daily. I can provide more information if necessary.