Keyboard : setup AltGr+e to produce é

[Bruno Costacurta <pubmb.bco@pt.lu>]

Hello,

I bought an Asus Eee (model 900) with Linux Xandros installed which I switched 
to Debian Lenny. With the Xandros I got the combination AltGr+e producing é, 
but no longer with Debian (same with á ..etc.. present on the Asus Eee  
keyboard UK model).

How can I setup this combination ? 
Should I setup it in xorg.conf ?
I'm using Xorg + KDE.

Thanks for attention and help.
Bye,
Bruno