Problem solved with the help from:
http://forum.insanelymac.com/index.php?showtopic=89640
Almost everything working fine with my good old 10.5 G4
😀
Except ........ the airport card seems don't like 128bit HEX WEP key and refused to join my wireless network at home! No problem with unsecured wifi network! Strange
😕
PS: I am posting this reply with my 10.5 G4