advanced keyboard tweaking

[Jacobo221 <jacobo221@hotmail.com>]

Hi everybody,

I've been playing around with xmodmap desperatly, in order to find a way
to have CTRL+ALT to act as ATLGR. All my effords have been unsuccessful.
It is much easier for me to press CTRL+ALT+2 to get the @ than to type
ALTGR+2, so that's the reason, in case you were wondering.

Ok, answers might be "check man xmodmap" "xmodmap is your friend, etc...".
Well, as i said, I've already tried, but no way. There's no way I could
find to have two keys to replace a single one.

Any help would be greatly appreciated.
Thanks in advance! :)