Excel function(s) in C/C++

We need a few Excel functions written for Ms Excel - Probably as an Add-in. This is for a project where data is send from an Excel sheet to another Excel Sheet in real-time. To acheive this you would have to use our API (Multicast) which documents how to do. We enclose a .rar file here with an old visual basic example for your convenience, as well as API documentation. The functions must be written in C++ or C Please get familiar with the API before replying to this We imagine these functions. SCPublish() SCSubscribe() This small project will be a prelude to a larger framework for Excel and other related projects with our Multicast protocol. Please do not respons on this project with "Yes we can do this" or the like, it will be deleted without response from us.