official link : (via torrent) (need to login)
http://www.silkroadonline.net/dataroom/download.asp
alternative link :
http://dl.free.fr/getfile.pl?file=/NqoEBy58/SilkroadOnline_GlobalOfficial_v1.110.exe
or
http://files.filefront.com/SilkroadOnline+GlobalOffi0exe/;7960141;;/fileinfo.html
WARNING !! ONLY INSTALL THIS AFTER 24/07/07 MAINTENANCE!!