I was looking for a way to delete a Window's service and I came accross the sc command.

Just open a command prompt and type sc and then the action you would like to perform.

Examples:
    Delete a service: 
        sc delete service_name
    Start a service:
        sc start service_name
    Stop a service: 
        sc stop service_name
    List all services: 
        sc query
 
The actuall service information is stored in the registry at this location:  

  HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services

If you're curious I was re-installing MySql on a machine and the mysql service already existed so I needed a way to get rid of it.  I knew there was a command to control services but I had to do some research and came up with this.

Enjoy.