Keyboard hack - missing hotkeys

[osvikvi]

My touchscreen has let me down. So untill i get a new one, I took apart an old keyboard and the remote control from a dito videoconference codec. To use the buttons on the remotecontrol with the interface from the keyboard, I simply connected the two matrix' together. I added a constant Ctrl+Alt with an external switch. So now the buttons on my remote result in real keaboard presses. Since the matrix' are fixed, I can't choose which buttons to use.

Next I went to program the hotkeys in CF, and to my surprise I realised there are no hotkeys for the "4 arrows", "Enter" and "Escape".
Now my question is, is it possible for me to add these actions? Either add a hotkey in CF or have a program to emulate these keys.

It is wrather urgent as I plan to drive to Belgium on sunday, so the arrows and enter buttons would really help me to gain control over CF again (untill I get my touch replaced).

Any Ideas?