How to create XMLport for import

Our in house accountant is asking to have and XMLport setup to allow him to import data. Where do I start to create the XMLport in RTC. I have setup a dataport in classic for him, but he is having issues with the dataport. He runs the dataport through classic. I would like to use RTC, but I need some guidance as to where to start. I feel confident on building it, but again, confused on where to start.

You can start reading existing xmlports in base database…

Creating XML Ports w/ samples

XML Port Fundamentals

Designing XMLPorts

Dynamics Nav XMLport Generator V1.3

Now go & create! [:P]