if we're just interested in the volume label, and nothing else, it's much
easier to use the Dir function instead.
For additional information, you will need to use GetVolumeInformation API.
And while we're on the subject of Volume Labels.... Yes, this value changes every time a
drive is formatted. No, there's no way in VBA (that I know of) to retrieve the
manufacturer's serial number or the BIOS number. And yes, using this technique for
copy-protection will cause endless headaches to your users.