http://www.geekgirls.com/windowsxp_controlpanel.htm

Table 1. Common Control Panel applets
Accessibility
Options access.cpl Add New Hardware
Wizard hdwwiz.cpl Add/Remove
Programs appwiz.cpl Date and Time
Properties timedate.cpl Display
Properties desk.cpl FindFast findfast.cpl Folder Properties
* folders Fonts Folder * fonts Internet
Properties inetcpl.cpl Joystick
Properties joy.cpl Keyboard
Properties main.cpl keyboard Mouse
Properties main.cpl Network
Properties ncpl.cpl Password
Properties password.cpl Phone and Modem
options telephon.cpl Power Management
powercfg.cpl Printers Folder
* printers Regional
settings intl.cpl Scanners and
Cameras sticpl.cpl Sound
Properties mmsys.cpl sounds Sounds and Audio Device
Properties mmsys.cpl System
Properties sysdm.cpl User settings nusrmgr.cpl TweakUI    tweakui.cpl

Note options marked with an * have special shortcut names which may be used
instead of the usual control applet.cpl,applet_number format.