From www.flightsimlabs.com/"This interface allows owners of Engravity's 737 and 747 CDU hardware to interface their CDUs with the PMDG 747-400X Queen of the Skies for Flight Simulator X. Purchaser must already own and have installed an Engravity 747-400 or 737 CDU in order to use this driver. Requires that the user also have installed the PMDG 747-400X for FSX line of products, along with the latest Service pack."A response is needed, thank you.

http://forums.avsim.net/dcboard.php?az=sho...id=151852&page=