David Bartosik has an article about making your own button here:
http://www.publishermvps.com/Default.aspx?tabid=106
You can also Insert > Design Gallery Object > Web Buttons.
In Pub 2000 you can use the Clip Gallery Tool to insert a button.
You can also Google for Web buttons to find endless sources of buttons.
DavidF
> I am trying to make a botton in Microsoft Publisher and to link it to an mp3
> file so visitors can download a sample song.