Here we will describe how to add new package to your WHMCS so that users can order it.
the process will involve working on both WHMCS and XenCenter (Xen Windows application to manage Xen Server)
The main idea here is that we need to create a template for each OS type/configuration we want to support
This part is normal product creation if you have created any products in whmcs before
Here you will need to create your linux and windows templates as descried in other tutorial Again we need to make sure the templates names match exactly the os name in Operating System configurable option in whmcs