Anyone interested may see https://bugs.launchpad.net/ubuntu/+source/hal-info/+bug/281951 where a solution was proposed for some of the Acer 5920 keys.
About € and $, (untested) I think you may map them to some scancodes, and then use loadkeys to map these scancodes to strings '€' and '$'.
Anyone interested may see https:/ /bugs.launchpad .net/ubuntu/ +source/ hal-info/ +bug/281951
where a solution was proposed for some of the Acer 5920 keys.
About € and $, (untested)
I think you may map them to some scancodes,
and then use loadkeys to map these scancodes to strings '€' and '$'.