List of Control Panel apps (*.cpl) you can launch from command line.

Accessibility Options
access.cpl


Add/Remove Programs
appwiz.cpl

Add Hardware Wizard
hdwwiz.cpl

Automatic Updates
wuaucpl.cpl

Bluetooth Properties
bthprops.cpl


Display Properties
desk.cpl


Firewall Properties
firewall.cpl


Game Controllers
joy.cpl


Internet Options
inetcpl.cpl


iSCSI Initiator
iscsicpl.cpl


Java Control Panel
jpicpl32.cpl


Licensing Mode
liccpa.cpl


Mouse Properties
main.cpl


Network Connections
ncpa.cpl


Network Setup Wizard
netsetup.cpl


ODBC Properties
odbccp32.cpl


Power Options
powercfg.cpl


Regional and Language Options
intl.cpl


Sound and Audio Devices
mmsys.cpl


Stored Passwords
keymgr.cpl


System Properties
sysdm.cpl


Telephone and Modem Properties
telephon.cpl


Time and Date Settings
timedate.cpl


User Accounts
nusrmgr.cpl

Windows Security Center
wscui.cpl


Wireless Link
irprops.cpl