楼主的系统不是网吧系统，没有哪个网吧会用home edition版的xp
xp home edition 版本中是不存在 wmic 和 taskkill 的
以下为Professional edition和Home edition的主要差别：
* The Professional edition includes the following components not found in the Home edition:
o Administrative Tools (in the Start Menu and Control Panel)
o Automated System Recovery (ASR)
o Boot Configuration Manager
o DriverQuery
o Group Policy Refresh Utility
o Multi-lingual User Interface (MUI) add-on
o NTFS Encryption Utilitiy
o Offline Files and Folders
o OpenFiles
o Performance Log Manager
o Remote Desktop
o Scheduled Tasks Console
o Security Template Utility
o Taskkill
o Tasklist
o Telnet Administrator
o WMIC ships on Windows XP Professional only. There is no WMIC on Windows XP Home Edition, because it's an admin tool, obviously.
