Keyboard special keys?

Hi, 
 
I would like to know if it is possible to add the support of some "special" 
keys on keyboard: 
I use french keyboard and I have AZERTY instead of QWERTY and that's fine, 
but: 
-The SUPPR key (the key used to suppress the right character, not BACKSPACE 
(BACKSPACE works and suppress the left character)) doesn't work. 
How can I correct this? 
-The HOME and END keys used to put the cursor at the beginning or at the end 
of the line don't work. 
How can I correct this? 
 
Thank you for all!