jumpman17, you are wrong in thinking EURO = english. Typically EURO releases have 3 or 4 different languages (german, french, spanish etc).
Add to that the fact that Americans spell words like colour, centre, etc wrong, and you'll see that localisation of a game is quite important.
Now as far as ROM HaXoRs like yourself go, it means fuck all, but for the publishers who are trying to SELL these games, they have to make changes between releases.
It seems every time a EURO version of an old US game is released some nutter is on the messageboards going "hasn't this been released already"... perhaps it would be worth adding to the FAQ page - if there is one?