rails安装问题

刚装RAILS遇到的问题..

Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator>ruby -v
ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32]

C:\Documents and Settings\Administrator>gem install rails -include-dependencies
Bulk updating Gem source index for: http://gems.rubyforge.org
Install required dependency activesupport? [Yn]  y
Install required dependency activerecord? [Yn]  y
Install required dependency actionpack? [Yn]  y
Install required dependency actionmailer? [Yn]  y
Install required dependency activeresource? [Yn]  y
Successfully installed rails-2.0.2
Successfully installed activesupport-2.0.2
Successfully installed activerecord-2.0.2
Successfully installed actionpack-2.0.2
Successfully installed actionmailer-2.0.2
Successfully installed activeresource-2.0.2
Installing ri documentation for activesupport-2.0.2...
Installing ri documentation for activerecord-2.0.2...
Installing ri documentation for actionpack-2.0.2...
Installing ri documentation for actionmailer-2.0.2...
Installing ri documentation for activeresource-2.0.2...
Installing RDoc documentation for activesupport-2.0.2...
Installing RDoc documentation for activerecord-2.0.2...
Installing RDoc documentation for actionpack-2.0.2...
Installing RDoc documentation for actionmailer-2.0.2...
Installing RDoc documentation for activeresource-2.0.2...

C:\Documents and Settings\Administrator>rails -v
'rails' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

C:\Documents and Settings\Administrator>rails -v
'rails' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

C:\Documents and Settings\Administrator>ruby path/to/your/new/application/script
/server
ruby: No such file or directory -- path/to/your/new/application/script/server (L
oadError)

上面装RAILS时没有报错，但找不到rails.cmd,这是为什么?

还有这论坛的图片插入怎么用啊。。难道还在先到别的地方上传，再把HTTP地址COPY过来才行吗。。是不是麻烦了点。