I'd just download them. I had all of them but then deleted them after I had watched them with friends.
It's been like a year since I've seen Lost, I completely forgot that they're Korean. I'm going on my horrible memory.
Interesting thing about Heroes, despite shoddy scriptwriting it manages to stay interesting enough. Lost, if it doesn't have a brilliant script then the show tanks in the interest department. Heroes has enough going for it that they can continue to suck (if they want) in their writing.