Solution: You will need 4 floppies in total.
1) After booting from boot.img, install.1 and install.2
2) Login as root
3) Type: pcmcia - insert pcmcia.dsk - let it probe your PC card
(4) Go to /lib/modules/2.4.33.3/kernel/drivers/usb/host) - not needed, but you can see the exact spelling, in case
5) Type: modprobe usb-ohci - it will detect your USB 2.0 devices
Now you can mount them!