XForms, radio buttons and check boxes: an example?

Hello,

I would like to display a form including radio buttons and check boxes. 
I tried to use the <select> and <select1> tags with appearance="full", 
but I still get a drop down list or a list box. The error is certainly 
in my code, so where is there an example with such widgets?

Thanks for any help

Pascal Sartoretti

PS, my config:

Windows XP SP2
FireFox 1.5 Beta 1
Mozilla XForms 0.2