CreateService Remotly

[AgentSmithers]

I was taking a look at PSEXEC and I saw that it uses CreateService API to create a service remotely and execute the list of exe's that are sent to it, But is that the only way you can have a machine exec binarys without loading a serivce at API level?

Is their a Execute API for remote machines that support even the oldest OS's?

I HAVE ADMIN PREV ON THE MACHINE ( Username And Password )

This is C++ but only not completly relevent to the question
// Installs and starts the remote service on remote machine
BOOL InstallAndStartRemoteService()
{
// Open remote Service Manager
SC_HANDLE hSCM = ::OpenSCManager( lpszMachine, NULL, SC_MANAGER_ALL_ACCESS);

if (hSCM == NULL)
return FALSE;

// Maybe it's already there and installed, let's try to run
SC_HANDLE hService =::OpenService( hSCM, SERVICENAME, SERVICE_ALL_ACCESS );

// Creates service on remote machine, if it's not installed yet
if ( hService == NULL )
hService = ::CreateService(
hSCM, SERVICENAME, LONGSERVICENAME,
SERVICE_ALL_ACCESS,
SERVICE_WIN32_OWN_PROCESS,
SERVICE_DEMAND_START, SERVICE_ERROR_NORMAL,
_T("%SystemRoot%\\system32\\")RemComSVCEXE,
NULL, NULL, NULL, NULL, NULL );

if (hService == NULL)
{
::CloseServiceHandle(hSCM);
return FALSE;
}

// Start service
if ( !StartService( hService, 0, NULL ) )
return FALSE;

::CloseServiceHandle(hService);
::CloseServiceHandle(hSCM);

return TRUE;
}

[Igor Vartanov]

But is that the only way you can have a machine exec binarys without loading a serivce at API level?

Is their a Execute API for remote machines that support even the oldest OS's?I admit I do not understand all this asked. You need some exe to be run remotely? Then you have the choices: there's some remote server (a plain one running user mode, or service) that is to run the executables you need
there's some RPC component (a plain one or DCOM server) registered in the remote system you can invoke remotelyIt would be more easy if you explain your ultimate task in details.