Do ya one better, humble.fool. I'll MegaUpload it once it's done, but if you want to give it another shot in the mean time, here's the direct download link for the file:
hxxp://www.illusion.jp/download/dlexe/js3_try.exe
remove xx and all that to avoid any referer snags. Don't want posts complaining about links not working, do we?
Post-post megaupload.
Concerning error:
I had standards and formats set to Japanese, location to Japanese, East Asian Languages installed, and Language for non-Unicode programs set to Japanese. Rebooted and when I tried to install, I'd get an error message... in Japanese. Not sure what else I could do from there. I s'pose I could toss up a screenshot of the error if you'd like, but short of AppLocaling it even with region already set to Japanese, I don't see what else would be necessary. And I know my version of DirectX 9 is current. I did want to mention it though so that enterprising and intelligent people would notice that it happened to someone else and they're not alone.