Hey, guys, I got something that might help...
1. Visit this website: http://www.nscripter.com/
2. Click on the link that says "nscripter newest version" (NScripter最新版(09/09/06))
3. Unzip the downloaded object
4. Go into \nscr\nscripter\実行ファイルï¼DLL
5. Copy nscr.exe
6. Paste it into the same file as sinan1.exe
7. Run nscr.exe
8. Bow down and worship me, or whatever you guys do to show undying gratitude
With this, you guys should be able to get past the character selection screen.
It's still in Japanese, but...that's your problem XD