CANPA I would strongly recommend that you use the agency mentioned in "oefag's" post.
The T&C's have all been covered before ad naseum. If you do a search through the "South Asia and Far East" forum you should find plenty of information.
In a nut shell...... training takes about 12 weeks, including 10 days off at home, you will be on training pay of $6500pcm.
Once on line your salary rises to c$9500pcm, and you should get a $3000 one off bonus on completion of your line check. You will be entitled to take 9 days off at home +2 leave days off every month ensuring that you can have at least 11 days off per month at home. The company will provide you with a free business class seat (upgradable to first) to travel home for your time off, and to travel back to Seoul. (Let me just clarify the seat on KE is on their network, if you don't live at the end of their network any other tickets are your responsibility!).
At work you are based in Seoul, and accommodated at the Hyatt Regency Hotel at Incheon. You will operate either from Incheon, or from Gimpo. In either case free transport is available. You will fly approx. 5/6 days on and then have 24hrs free of duty, before repeating the cycle. You will do about 55Hrs per month on a mix of domestic, and International flights. Hotel accommodation and transport is all provided when on duty.
You will receive a per diem paid either in Korean Won, or USD depending on your destinations and that comes to approximately USD1000 pcm.
On the 737 fleet you will cover Korea, Japan, China (no lay overs), Taiwan, Hong Kong, Russia, Veitnam (lay over), Cambodia (lay over), Manila (lay over) and probably a few others too, the route network is expanding rapidly!
You will fly -800's (with or without winglets) and -900's. The First Officers are all Korean and are a very pleasant bunch.
That should give you a flavour of the job, but if you have any specific questions fire away!