Download Lineage 2:Kamael(The 1st Throne) here:
1) http://www.gamershell.com/download_21882.shtml
or
2) Update your client(c4,c5,interlude...)
Servers: 1) http://www.l2athebaldt.com/index.php?id=start_lk
2) http://age-of-shadows.com
*You can take a look for more kamael servers right here:
http://l2.hopzone.net/lineage2/list.html