Essentially the process is: Use PlaneConverter to create your initial package for your FSX aircraft.iFly Jets - The 737NG for FSX is a complete 737NG add-on for Microsoft Flight Simulator X.
Full Version Product Feature: nine new liveries for default FSX Boeing 737NG and for iFly 737NG FSX made by Perfect Fligh in very high resolution textures compatible with DirectX 10: American Airlines, Air India, XL Airways, Neos, TUIfly, British MCP737NG-MAX is a full scale replica of Boeing 737 MODE CONTROL PANEL The module is complete and ready to use and interface with Microsoft FSX, P3d, Project Magenta, Prosim and other add-on. For my personal circumstances, the cockpit size is a potential issue though, the 737 cockpit is pretty compact (read small) and access to the crew seats is quite restricted. However, often checklists will work with older and newer versions of your flight simulator program just fine.
FHD - Full High Resolution (2048 px) repaints 4 of world-known airlines for the Aerosoft A321 Professional model on completely new Paint Kit. This product is the Base Pack for the 737 Captain expansion models (-100, -200C/F, ADV). Belavia Boeing 737-800 EW-456PA in new colors for the payware Overland/Simmer Sky 737-800 model.