VB3-VB6 generated tones; How to?

I need to find a way for VB6 to generate tones as I did in VB3. Many of my installations do not have sound cards and I need the PC to make noise. From VB3 I had the following:

Sub Sound (byval Frequency as Long, byval SoundDuration as Integer)
Dim i as Integer

If Frequency < 300 then
Frequency = 300 * 65536
else
If Frequency > 15000 then
Frequency = 15000 * 65636
else
Frequency = Frequency * 65536
End If
End If
i = SetVoiceSound(1, Frequency, SoundDuration)
i = StartSound()
Do While (WaitSoundState(1) <> 0)
i = WaitSoundState(1)
Loop

End Sub
'
' Make a rise/fall siren noise
'
Sub Siren (Frequency as Integer)
Dim i as Integer
Dim result as Integer
Dim StepSize as Integer
Dim Freq as Integer

result = OpenSound()
If result < 0 then
' "OpenSound Failed; Sound.Drv not available. Restart windows to correct problem."
Beep
else
If Frequency < 300 then
Frequency = 300
End If
SirenFreq1 = Frequency
SirenFreq2 = Frequency * 3
SirenDur = 6
i = true
StepSize = (SirenFreq2 - SirenFreq1) / 30
for Freq = SirenFreq1 to SirenFreq2 step StepSize
Call Sound(Freq, SirenDur)
next Freq

for Freq = SirenFreq2 to SirenFreq1 step -StepSize
Call Sound(Freq, SirenDur)
next Freq
result = CloseSound()
End If

End Sub

I'd call Siren(3000) to get a rise/fall siren from the PC's speaker. Good enough. From VB6 I have not found any way to accomplish this except .wav files, but most existing users have (and can't add) sound cards. All I can think of is Thunking to the "Sound.Drv", but I don't know how to do this. Any advise would be appreciated, lack of this functionality has prevented me from moving many existing users to my 32 bit applications. As a stop gap I've used beep but this is WAY to limited.

Thanks,