ACPI_MSEC_PER_SEC
Time.tv_sec += (MsecTimeout / ACPI_MSEC_PER_SEC);
Time.tv_nsec += ((MsecTimeout % ACPI_MSEC_PER_SEC) * ACPI_NSEC_PER_MSEC);
sleep (milliseconds / ACPI_MSEC_PER_SEC);
usleep ((milliseconds % ACPI_MSEC_PER_SEC) * ACPI_USEC_PER_MSEC);