mount external usb drive at boot

[Hannuman Bull <hannuman@bullwebsystems.com>]

I have an external usb drive that I'm setting up as a backup hd.  I've 
partitioned and formatted the drive as ext3.  I can mount the drive 
manually at the prompt, but I can't seem to get fstab to mount it 
automatically on boot. 

I've changed the /etc/fstab options several times without much success.  
Here is my most recent setting:

   /dev/sdb1   /backuppc   ext3   rw   0   0

After boot, /dev/sdb1 is not mounted automatically. However, it does 
mount properly when I manually type 'mount /dev/sdb1'. From 'mount', I get :

   /dev/sdb1 on /backuppc type ext3 (rw)


Just after boot, I get the following from dmesg :

scsi2 : SCSI emulation for USB Mass Storage devices
 Vendor: ST340083  Model: 2A                Rev:  0 0
 Type:   Direct-Access                      ANSI SCSI revision: 02
SCSI device sdb: 781422768 512-byte hdwr sectors (400088 MB)
sdb: assuming drive cache: write through
/dev/scsi/host2/bus0/target0/lun0: p1
Attached scsi disk sdb at scsi2, channel 0, id 0, lun 0
USB Mass Storage device found at 3
usb 1-2: new low speed USB device using address 3
input: USB HID v1.10 Mouse [Logitech Optical USB Mouse] on 
usb-0000:00:1d.0-2


I'm going to install BackupPC, so the drive needs to be mounted before 
the BackupPC script is run in /etc/inid.d/ .  Any help would be greatly 
appreciated.

Thanks,

Hannuman