On iPAQ:
stop all serial activity e.g. minicom (say ctrl-d and ctrl-a,x,<enter>)

On PC:
/usr/sbin/pppd /dev/ttyS0 115200 192.168.0.1:192.168.0.2 nodetach local noauth nocrtscts lock user ppp connect "/usr/sbin/chat -v -t3 ogin--ogin: ppp"

	# log to ipaq just to see if things are ok:
ssh root@192.168.0.2

	# continue on PC
modprobe ip_tables

iptables -F

iptables -t nat -F

iptables -t nat -A POSTROUTING -s 192.168.0.2 -j MASQUERADE

iptables -A FORWARD -s 192.168.0.2 -j ACCEPT

iptables -A FORWARD -d 192.168.0.2 -j ACCEPT

echo "1" >/proc/sys/net/ipv4/ip_forward

	# copy /etc/resolv.conf from PC to ipaq
scp /etc/resolv.conf root@192.168.0.2:/etc/resolv.conf

	# you may need to set routes to use ppp-tunnel by default
	# but it may be that way autom.

	# On iPAQ
ntpdate -b time.handhelds.org
ipkg update
ipkg upgrade