Created a ID "handywang" in https://github.com/
Adding a SSH key maybe is a important step(Windows XP platform):
1) Download MsysGit: http://code.google.com/p/msysgit/downloads/list OR http://git-scm.com/download
2) Intall MsysGit, I reference from http://lzqustc.iteye.com/blog/415751 , but the offical HOWTO of Generate SSH-KEY is http://help.github.com/msysgit-key-setup/ . Whatever, you can choose.
NOTE : Just push the " ENTER" key when create SSH-KEY. After it's finished, you need open the file: "~/.ssh/ id_rsa.pub" And copy the key . Here "~/" means "C:\Documents and Settings\Administrator\" .