Blimey, that korean site likes to do it the hard way, its really easy & all you need is...
1.Vobsub2.23 (installed first)
2.VirtualDubMod
3.YAAI (Audio aligner)
load the film, go to filters, add textsub2.23, load in your srt file & youre off.
Go to save & switch to whichever codec you prefer, trial & error with the codec settings til you get it right & job done.
Sound out of sync? play about with YAAI to correct the offset caused by any VBR audio tracks
Not everyone wants an x-box spud & some peeps prefer hard subbed to soft subbed, each to their own