static extern void SignalStarted(UInt32 dw);

Declare Sub SignalStarted Lib "coredll.dll" (ByVal dw As UInt32)

dw is an unsigned integer type parameter that corresponds to the launch code of the application in the HKLM\init registry. ie. If the registry value "Launch25" corresponds to the application that you want to launch, the application that you launch should call SignalStarted(25) when it has launched.

private static extern void SignalStarted(UInt32 dw);

    SignalStarted(25);