build a vtiger modul in a vtiger 6.5 solution

We have an vtiger solution 6.5 on our server in german but for our needs is this not important. We are a company which bring companys together. For example company a search for a service wihich offer company b. We inform company a about that company b offer this what company A is looking for (like products or services) . in vtiger these are all organizations. We want to offer company A the company B with his [login to view URL] vice versa we inform B that we have inform A about theire services. We will remark this for later we can make call backs or sent pdf s or email and so on. We think this is a someone with experience with modul designer or else will be good.