你需要这样做，也许可以解决你的问题

1. open your window explorer.

2. in the menue click on "tools"

3. choose "fold options...", now u can see a dialog window popup.

4. in the dialog window, click on "view" tab

5. in advanced settings. find a check box "Hiding extentions for known file types", uncheck it.

6. now you can go ahead and change your file name with .rm file.


最后，向各位推荐一个网站：

www.TopChineseNews.com （不区分大小写）

谢谢