This is list of common commands which can be used from command prompt or from run screen.You can just do:-

=>Click On Start menu

=>Click On Run

Type or paste any of command from list to test it or use it.Be sure to read description of command before using it and you will be runing command at your own risk :-) i will not there for fixing it if you got issues from these commands .However these are safe commands but still you must be able enough to know that what ar you doing.

• appwiz.cpl -
  • Add/Remove Programs
• control admintools -
  • Adminastrative Tools
• control color -
  • The Display with the appearance tab open
• control date/time -
  • Date and Time properties
• control folders -
  • Folder Options
• control fonts -
  • Fonts Folder
• control infrared -
  • Infrared folder if available
• control netconnections -
  • Network and Dial-up Connections window
• control netware -
  • Netware window if installed and available
• control panel -
  • Control Panel
• control printers -
  • Printers Folder control printers
• control schedtasks -
  • Schedule tasks window
• ccontrol telephony -
  • Location information window
• control userpasswords -
  • User Accounts
• desk.cpl -
  • Display Properties
• findfast.cpl -
  • FindFast control
• firewall.cpl -
  • Windows Firewall
• Hdwwiz.cpl -
  • Add Hardware Wizard
• inetcpl.cpl -
  • Internet Properties
• intl.cpl -
  • Regional and Language Options
• joy.cpl -
  • Game Controls
• jpicpl32.cpl -
  • Java Control Panle
• main.cpl keyboard -
  • keyboard Keyboard Properties
• main.cpl -
  • Mouse Properties
• mlcfg32.cpl -
  • Mail and Fax
• mmsys.cpl -
  • Multimedia Properties
• mmsys.cpl sounds -
  • Sound Properties
• ncpa.cpl -
  • NetWork Connections
• netcpl.cpl -
  • Network Properties
• netsetup.cpl -
  • Network Setup Wizard
• nusrmgr.cpl -
  • User Accounts
• odbccp32.cpl -
  • ODBC Data Source Administrator
• Powercfg.cpl -
  • Power Options
• password.cpl -
  • Password Properties control
• sysdm.cpl -
  • System Properties
• Telephon.cpl -
  • Telephone Controls
• timedate.cpl -
  • Date/Time Properties
• wscui.cpl -
  • Windows Security Center
• Wuaucpl.cpl -
  • Windows Auto Updater