I have a Tendraw USB Infrared remote that allows remote power on of the xbox

It acts as a usb keyboard and I can reprogram any key to do anything a normal keyboard does (most keys are already fine for xbmc4xbox)
The remote works perfectly for all functions except the onscreen keyboard entry boxes because when on these in xbmc4xbox keyboard mode it expects you to type on a qwerty keyboard but the remote doesn't have one (it does if using a pc with software ime, i.e press 1 a few times cycles through 1abc)
Basically I'm wanting, while xbmc4xbox is in keyboard mode, i.e using a keyboard, to be able to use the keyboards cursor keys and enter key for selecting the onscreen keys, to mimic as when using a normal xbox remote.
Any ideas guys?
Cheers