A. Each .cpl file represents one or more control panel applets (Start - Settings - Control Panel). Below is a list of common .cpl files and what Control Panel Applets they represent
|.cpl file name||Control Panel Applets|
|DEVAPPS.CPL||PCMCIA, SCSI adapters and tape drives|
|MAIN.CPL||Fonts, keyboard, mouse and printers|
|MMSYS.CPL||Sounds and multimedia|
|RASCPL.CPL||Dial up monitor|
|SRVMGR.CPL||Server, services and devices|
If you renames any of these files then the items they represent in the
Control Panel would not be shown, e.g.
rename timedate.cpl timedate.non
would remove the date/time control panel applet.
Also, setting HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoSetFolders (REG_DWORD) to 1 will hide the Control Panel, Printers and My Computer in Explorer and Start Menu. You would normally need to create this value as it does not exist by default.