XP远程连接启用网络级别身份验证方法（修改注册表的两个地方，再重新启动电脑即可）

http://wenku.baidu.com/link?url=o59pf7m5b6Kh5_V4MLf6OBrGXTjr4NWkk58vaitNgm0Tfhur9j-JJ6xHbbn1zW16-dcEpmRXh4i67fMgjksm_XltfzWhYS2HWsp0XVL5dXS