I'm sure there is still a few of u still with box letters instead of Taiwanese.
I sorted mine out yesterday and it completely worked, but to let you know im on Windows 7. So...

>Control panel
>Change display language
>You well get to 'Regional and language' window, click on 'Administrative' tab.
>There should be a box saying 'Change system locale', click that and choose Chinese (Traditional, Taiwan).
>Reset computer.

Since i did this, it hasn't gone back to box letters, some of you already know this, but this is for the people that don't. I'm not sure exactly how it would look like in older Windows, but it shouldn't be too much different.

I did that, and my computer doesn't start! I needed to revert to last good configuration to start my computer again. I'm in Win7 ultimate, downloaded Chinese (traditional) and taiwanese languase packs, but sthill have some squares in the game.