how to unlock account : http://www.gmbase.com/bbs/Topic-B171-T8095.aspx
Modifications of Password Protection and Mailbox：http://www.gmbase.com/bbs/Topic-B171-T8055.aspx
how to charge time card : http://www.3zoom.com/mmo/mmo-1473.html

how to use vpn : http://www.3zoom.com/mmo/mmo-1720.html
I have a link for the common problem in Tera(kr) ,you cant ready Korean ,but you can find out the problem .
hope these hopeful for my friends .