Create a plugin to add CCNOW payment gateway to WP-estore by AMASenterprises

We currently have a Non-WP site which works with CCNOW.com payment gateway. As a result of this we already have the code for integrating with CCNOW. We have a new WP site (currently under development) which will use WP estore plugin… (Budget: $30-$250 USD, Jobs: PHP, WordPress)