The spanish realms are up and running, can I use the roster with the spanish data with a modified localization file? Or I must modify all the .php files?

I'm quite sure it only needs localization. Check the various french topics, that localization was added fairly recently as well.

The spanish localization works great on my test site, you can see at:


Oscuridad Eterna


When the translation will be finished, I'll post the file here.