Convert WHMCS module to Hostbill module

We are thinking about changing automation system. Some modules are missing, which are custom for our WHMCS system. We have one module we need to be converted. It is open code and should be not to much work. You need to be familiar with WHMCS, Hostbill and php/mysql offcourse. More information in private message. Offers you made outside our requirements, will not be answered!