how to map Fn-c (copy-function) to a hot key?

I want to map ctrl-c  to one of the hot keys, e.g. the 
mail button (I don't need mail) because I want to 
copy some text from Mbox-Reader programm to my 
Texteditor. Mbox-REader has not "copy" function.

Is it possible? How?

accoring to Michael Nemeth <[email protected]>  all ctrl-
Functions work well with " tkcROM" (see thread 
 "how to envoke a ctrl-c in qpe-shell"). 
How can I change to "tkcROM"?

Michael Nemeth <[email protected]>:
> It depends on keyboard and ROM ....
> In Sharp ROM
> on hardware keyboard it is Fn C
> on virtual keyboard it is broken and you cannot send CTRT C
> 
> In tkcROM everything works OK
 
thx
Ekkard