i did the same thing..
you can only use .bmp and not Jpg or gifs... tried this already... its really hard. took me 4 hours to make..
this will work with the GP client + Snaity patch + sauron's Sync files.. but mostly in Chinese..
i don't really know if this would work with the cracked cabalmain that we have..but i cant get it past the cabalmain ver1262 << dunno why... but it works fine with my server .
Oh BTW, i use an english patch too since i get chinese characters mos of the time.. =D
great work on the launcher's design.. nice release but there is no link...