Ruby on rails 安装完后 mongrel_rails start -d 报错

This application has failed to start because msvcrt-ruby18.dll was not found.Re-installing the application may fix this problem.
重新安装后还是这样。

出错信息已经提示了，少了msvcrt-ruby18.dll 。找一个放到ruby的bin目录下
另外，参考提问的艺术 http://www.iteye.com/wiki/JavaEye/91-AskSmart