There could be two reasons, I think:
1.Try to increase the form height a little bit, and /or move the button a little heigher.
2. set talk off

>I am trying to make a sound when the user goes over a button.
>I am using set bell to 'file.wav' in my screen init and in the mouseover method, I am using ??chr(7). It works fine execpt the fact that this command make my screen go up a bit. Is there a way to avoid this.
>
>Thanks
>Eric