Problem with external USB hard drive

["Andrig T. Miller" <andrig.t.miller@xxxxxxxxx>]

I have a Western Digital "My Book" external USB and Firewire hard
drive.  I have been using it to backup my laptop.  Recently my backup
file (gzipped tar of my home directory) exceeded the 4GB limit of the
fat32 file system on this drive.  So, I proceeded to go ahead and
change the file system from fat32 to ext3.  I was not going to use this
with anything else but Linux anyway, so the better file system sounded
good.  So, I used GParted, and reformatted the drive (I'm using FC6) as
an ext3 file system.  It redid the partition and reformatted the drive
successfully with no errors.  I had unmounted the drive prior to this,
as GParted would not let me do this without doing that first. 
Afterwards, I unplugged it, and replugged it into the USB port, and it
came on, just like before, but it wouldn't automount.  I manually
mounted the drive to a directory owned by my normal user, and I am able
to read and write to it successfully.  The drive appears to function
properly.

Why won't it automount to /media/My Book anymore?  What causes
FC6 to automount something to begin with?  Does it have to be a fat32
partition for the automount to work?  Is there something with the
disklabel that causes the automount to work and show it as a drive on
the desktop?  I thought it would work regardless of the file system on
it, but I guess not.

Any help in restoring the automount functionality would be greatly appreciated.

Thanks.