As you all have probably noticed by now, I am on a mission to wipe out IR and use IP without more hardware.  I have a Global Cache IP to IR (ok, a little more hardware I bought for my Roomie Remote) and used it to learn the codes of my Draper Screen, the only non-IP device in my set-up.  I created a device and IP macros for the URC MX-5000 and it works perfectly.

The codes are entered as follows as an IP macro (don't enter 'up, down, stop', those are your buttons in case it is not obvious):

Up:
sendir,1:3,1,37993,1,1,10,30,10,66,10,30,10,66,10,30,10,30,10,30,10,30,10,66,10,30,10,3799

Down:
sendir,1:3,1,37993,1,1,10,30,10,66,10,30,10,30,10,66,10,30,10,30,10,30,10,66,10,30,10,3799

Stop:
sendir,1:3,1,37993,1,1,10,30,10,66,10,30,10,66,10,30,10,66,10,30,10,30,10,66,10,30,10,3799

in Device you must enter your IP address, your port ID is: 4998

and STILL no one has done a JVC D-ILA IP projector that can help me???