wav files with VB4?

Hey there,
Can anyone tell me how to play a .wav file using Visual Basic version 4?

I have tried using code for version 5 & 6 but it shoots up an error message saying 'error in loading dll'.

Also is there any scope for varying the playback speed of the wav file with a variable?

Any help appreciated. Cheers.
Ben.

Which version of windows are you running?

Windows 98.
I can now play a wav file with vb4 using MMSYSTEM.DLL. But is there any way i can vary its playback speed in real time? Any ideas or solutions appreciated.