[[escafandra]]

Con CreateProcess:

   PROCESS_INFORMATION pi = {0};
   STARTUPINFO si = {0};
   si.cb = sizeof(si);
   si.dwFlags = STARTF_USESHOWWINDOW;
   si.wShowWindow = SW_SHOW;
   bool bRet = CreateProcess(0, "C:\MiPrograma.exe param1 param2,0,0,0,0,0,0,&si,&pi);

Con ShellExecute:

ShellExecute(0, 0, "C:\MiPrograma.exe", "param1 param2", 0, SW_SHOW);

Saludos.