USB and IDE-SCSI devices not showing up (migration from Mandrake to Debian testing).

[Adam <a24061@yahoo.com>]

I recently did a clean installation of Debian testing on my workstation,
but I can't find my USB devices and CD-RW.

/sbin/lsmod includes the following:

sg                     28412   0 (autoclean) (unused)
usb-uhci               19696   0 (unused)
usb-ohci               16136   0 (unused)
usbcore                52908   0 [usb-uhci usb-ohci]
ide-scsi                8464   0
ide-cd                 27968   0
cdrom                  25088   0 [ide-cd]
sd_mod                 10860   0 (unused)
scsi_mod               85408   3 [sg ide-scsi sd_mod]
ide-disk               12512   5 (autoclean)
ide-detect               288   0 (autoclean) (unused)
ide-core               94332   5 (autoclean) [ide-scsi ide-cd ide-disk
                                 ide-detect sis5513]

and I've installed devfsd and added append="hdd=ide-scsi" to lilo.conf. 
However cdrecord -scanbus finds nothing and things are missing in /proc:

/proc $ ls -l bus/usb/
total 0

/proc $ cat scsi/scsi 
Attached devices: none

There should be a CD-RW (by ide-scsi) and three USB devices (a webcam, a
gamepad and a SmartMedia card reader).

What am I missing?

Thanks,
Adam