For those interested, I got my korean driving license now, there is a driver's license institute with people speaking english (just enough to complete the training!!) in Suwal (898-1 Yangjeong-Dong)(near Hillstate residence),
Here is the contact: Mr Sang-Wan Park, Mobile 010-9637-4450, e-mail: firstname.lastname@example.org
You need Alien card, 3 ID photos and will pass medical check (arranged by Mr Park).
It costs around 500 000 wons, and will take you 5 hours for "safe driving education" in a school class, 3 hours to go to Masan with their bus to pass written test (you will get a training CD), 2 hours inside driving practice (with small test at the end) and 6 hours outside driving practice, with the test at the end.
It took me 3 weeks to complete everything.
Hope it helps!