Thunar: how do I change a thumb drive's volume label?

[Todd and Margo Chester]

Hi All,

   I am running Thunar 0.8.0 under XFce 4.4.1.

   I am not finding a way to change my USB
thumb drive's (FAT32) volume label.  If I
right click on the desktop icon and go
to properties, I see the label, but it wont
let me change it.  If I open Thunar, it will
only let rename the mount point.  Bummer.

   I really, do not want to go looking for
a Windows computer to do this!  Where am I
going wrong?

Many thanks,
-T