Iomega Zip USB

Hi,

I'm trying to access to my USB Zip with Tomsrtbt2.0.23 but I get an error:
-I boot normally with Tomsrtbt;
-I log in as root;
-Then I load usb-storage.o (downloaded from add-ons):
	insmod /mnt/win/usb-storage.o
And I get this:
	Using /mnt/win/usb-storage.o
	insmod: unresolved symbol usb_deregister
	insmod: unresolved symbol usb_free_urb
	insmod: unresolved symbol usb_alloc_urb
	insmod: unresolved symbol usb_register
	insmod: unresolved symbol usb_string
	insmod: unresolved symbol usb_submit_urb
	insmod: unresolved symbol usb_control_msg
	insmod: unresolved symbol usb_set_interface
	insmod: unresolved symbol usb_clear_halt
	insmod: unresolved symbol usb_unlink_urb
Do I forget something?
Should I load another driver before I load usb-storage.o?

Another question to Iomega Zip USB users:
Which program do you use to mount/unmount usb zip floppies?
There is an "iw" in Iomega WebSite.
I used it with Mdk8.1, but it seems to not being necessary with Mdk8.2 
(automount is OK with USB Zip).

If anyone can help...

Thank you very much!

'Hope you'll understand my froggy language...