Wordpress Plugin Adaptation

Dear Everybody, This is a component of a bigger project. The present parts is to adapt ONE file of the Wordpress plugin, Prospress ([login to view URL]), so that it can work for the total adaptation of the plugin. Just refer to the attached file to grasp the big picture. I need someone change the said file, some 600 lines of code, but many are redundant for the present purpose. The goal is to make the posting of some "auctions" the way I want it to be (details will given). Please reply to this post by answering which file of the Wordpress plugin, Prospress, should be converted. Thank you! **This is a serious invitation to treat. Once this work mode gets smooth, other parts of the projects and other projects will follow this path without much less negotiation. **