Server Setup

First of all you need to install Internet Information Services (IIS) with the PHP support, take a look at MSDN https://msdn.microsoft.com/library/hh994592

Then you need to install MySql on your server from  https://dev.mysql.com/downloads/mysql/ (the Community Edition is free), during the installation it should ask you to install it as service which is required to automatically launch it upon each system restart. Also you should choose a strong password for your "root" user that has administrative privileges on all databases registered on MySql. I also suggest to install phpMyAdmin (and create a new website for it on IIS using a port different from the standard 80) to access the databases from web, or MySql Workbench (from mysql.com) if you're planning to not access the database from outside, and in both case I suggest to create a rule in Windows Firewall to deny external connections to port 3306 for security reason.

Once you have installed both IIS+PHP and MySql you can create a new database called "combu" (or any other of your choice) through phpMyAdmin or MySql Workbench (you can also use the command prompt to execute "mysql -uroot -p" to enter the MySql console and execute queries).

Finally uncompress the file combu_web.zip that you'll find in the unitypackage and upload the content to your server (usually the default IIS website is in C:Inetpubwwwroot) and navigate to http://yourdomain/combu/_setup to create the configuration file (make sure that the folder "combu" has write permissions for the user "NETWORK_SERVICE" and/or the system user of the Application Pool that is associated to your website on IIS for example "IIS AppPoolDefaultAppPool" [just an example, yours may be different, open IIS and look inside Application Pools to see the identities and what's used in your website]) and  create the database. After you've finished both the configuration and the creation of the database please remember to delete the folder "_setup".

If you'll need more support or doesn't succeed to complete all steps you can send me your Skype ID by PM here and we can schedule a chat to help on this.