lol how do you play in different servers then? auto update every time you wanna change server? :|
on-topic, now you have to change 3 folders in almost every server: system, systextures and animations.
what I do is, instead of numbering the folders, naming them according to the server they correspond, like: system_l2mega, system_l2terror, system_l2khaos and so on. you leave the folder system for the server you want to play.
And as a sidenote that everyone assumed already this only works inside a l2 installation for the same chronicle/throne, you need a folder appart for other chronicles