KSSN / Basically KSSID is a type of korean social security #/ID provided to anyone visiting, and given at birth to every citizen of Korea born there. These are obtainable via generators and/or lists out there.
However, a lot of the time (Especially for games) they will want a phone number too. They then call this # to verify, or verify it with a records check of some sort. So the KSSID has to match the phone number. Which makes it nearly impossible for those running phone verification checks/calls to be registered at.
I know all this because Archlord is originally a Korean game and is in the 5th episode (Expansion), while the English version just got to Episode 2 a few months ago. I wanted to play the 5th Episode though, haha....
So, I went to the Korean Archlord site (run by.. NHN games, i think that was the name), downloaded the korean version and patches, then went through the registration process.. made it past the KSSID/KSSN part (Magically), but then there was the phone number registration part.... I tried a lot of different ways to get through this with no success...
(forgot which site I used, but there are some good translators online/free that I used).
Hope this helps you understand the issues ^___^
After you get it translated repost if the phone # is even an issue...
Exeduz, I know how you feel haha, I spent some hours obtaining stuff/translating, trying to get registered on the Korean Archlord. If you know anything about what I said above, the phone number verification, let me know or pm me

thnanks
Good Luck though