да, тогда MessageBeep подходит.

хотя думаю лучше это:

http://msdn.microsoft.com/en-us/library/ms679277(VS.85).aspx

BOOL WINAPI Beep(
__in DWORD dwFreq,
__in DWORD dwDuration
);

Parameters

dwFreq [in] The frequency of the sound, in hertz. This parameter must be in the range 37 through 32,767 (0x25 through 0x7FFF).

dwDuration [in] The duration of the sound, in milliseconds.

Example Code [C++]
The following example demonstrates the use of this function.
Beep( 750, 300 );