you will need this to play Zayaan's PW when it is released. better download it now so you dont have to wait a long time to download it when ZPW is released.
2.4GB - Client version : 3
Torrent download: http://pwi-ns.perfectworld.com/clients/Perfect_World_International.exe.torrent
Direct download: http://pwi-ns.perfectworld.com/clients/pwi_AllFiles_v37.exe
Client version 1, size 2.44 GB.
http://asiapworld.com/pw/index.php?option=com_content&task=view&id=249&Itemid=158#
I am not sure if the client version to play has to be 1 or 3 to play ZPW, but I am putting both on just in case. I advise you to download version 1, it is most likely to be that one. patch download links will be released when ZPW is up and running.