------------------------	/etc/inetd.conf
ssh     stream  tcp     nowait  root    /usr/sbin/tcpd /usr/local/bin/sshd -i
ssh-keygen -b 1024 -f /usr/local/etc/ssh_host_key -N ''
=======================================	swap
dd if=/dev/zero of=/mnt/cf/SwapFile count=32768
mkswap /mnt/cf/SwapFile
swapon /mnt/cf/SwapFile
swapoff /mnt/cf/SwapFile
=======================================
I extracted the original ROM-fs from my Zaurus with dd, copied it to my PC,
mounted it with mount -o loop, copied and altered it. After that I made a new
init.rd with mkcramfs. 
Then I downloaded the english 2.37 OSPack and extracted the necessary files
with romburst. I copied the bootflag.txt from another site and zImage.bin from
the OSPack to the CompactFlash-Card of my Zaurus (using samba). Then I copied
my altered init.rd to the CompactFlash-Card and updated my zaurus with this
c+d+reset thingie.
=======================================     Zaurus ---> internet
------------- PC side
ifconfig usb0 192.168.33.1 netmask 255.255.255.255 up
route add -host 192.168.33.15 usb0
iptables -t nat -F
iptables -t nat -A POSTROUTING -j SNAT -o ethX --to MY_IP
echo 1 > /proc/sys/net/ipv4/ip_forward
------------- Zaurus side
add a default route pointing to your linux PC
route add -host 192.168.33.1 usbd0
route delete -net 192.168.33.0/24 usbd0
route add default gw 192.168.33.1
then edit /etc/resolv.conf to add the IP of your DNS
------------- /etc/hotplug/usb/usbdnet
#! /bin/bash
typeset -i num
num=`ifconfig | grep usb0 | wc -l`
if [ $num -eq 0 ] ; then
	ifconfig usb0 192.168.33.1 netmask 255.255.255.255 up
	route add -host 192.168.33.15 usb0
fi
iptables  -t nat -F
iptables  -t nat -A POSTROUTING -j SNAT -o eth0 --to 192.168.3.5
echo 1 > /proc/sys/net/ipv4/ip_forward
======================================= Debian
iface usb0 inet static
    address 192.168.129.1
    pointopoint 192.168.33.1
    netmask 255.255.255.255
======================================= lsusb
Bus 003 Device 001: ID 0000:0000  
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 003: ID 04dd:8004 Sharp Corp. Zaurus SL-5000D/SL-5500 PDA
Bus 001 Device 002: ID 046d:c00c Logitech, Inc. Optical Wheel Mouse
Bus 001 Device 001: ID 0000:0000  
======================================= 

/etc/init.d/hotplug status