怎样把C盘的除系统以外没用的东西转移其它处

如果是应用程序，你可以把应用程序安装在其它的盘。
如果是系统目录，参考注册表修改。
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData"="C:\\Documents and Settings\\Administrator\\Application Data"
"Cookies"="C:\\Documents and Settings\\Administrator\\Cookies"
"Desktop"="C:\\Documents and Settings\\Administrator\\桌面"
"Favorites"="D:\\Favorites"
"NetHood"="C:\\Documents and Settings\\Administrator\\NetHood"
"Personal"="D:\\My Documents"
"PrintHood"="C:\\Documents and Settings\\Administrator\\PrintHood"
"Recent"="C:\\Documents and Settings\\Administrator\\