Hi,
Get yourself realvnc enterprise edition
( if you need a link say so )
install, start server.
configure users and server password
realvnc uses the port 5900 as default
( i would change it to something else )
then install vnc client like Mocha VNC onto your ppc.
start client
start new conection
give in your server ip and port like this ip:port
example:
192.168.1.101:1234
and password
Hope this helpes
if you get stuck leave a message