USB: which modules for iOmega Zip?

I've recompiled my kernel and set most things to module. Which modules do I need to load to get my iOmega Zip drive working? I've loaded the following, but still see nothing in /proc/scsi/scsi usb-storage 20624 0 (unused) scsi_mod 80656 1 [sd_mod usb-storage] usbcore 54976 1 [usb-storage snd] vfat 9296 0 (autoclean) and even tried: sd_mod 10016 0 (autoclean) (unused) But still no devices show up? (BTW I have an iOmega 250 zip under bus-power). thanks for the help, -j