Well, I've done it before (RNG in a Korean game), but to get there will be no walk in the park. 9.9
For one, I'd have to start pretty much from scratch, do ID/SID abuse, then play through the game to get to Ho-Oh. And do that without any cheats at all. xD
So in other words, it'd take a while. I can do it, but I think you'd be better off asking Winters because he already has a good Korean HGSS save.