In the official link here :
http://www.world2.com.my/downloads-client.aspYou can download the install in 10 parts. Part 9 and 10 are compressing data4.pck so you would only need to get them, but you need a software like winrar to manage that, otherwise you have to dl them all (and be warned that the archives don't have restoration checkpoint data so your dl can be corrupted sometimes).