Problem solved via danish discussion group eksperten.dk
Problem apeared to be that the php.ini file of Fedora Core 2 has register_globals set to off. After changing this to on, the scripts vere working.
From the php.ini file:
; You should do your best to write your scripts so that they do not require
; register_globals to be on; Using form variables as globals can easily lead
; to possible security problems, if the code is not very well thought of.
register_globals = On
Well .. the book is prited in year 2000 and 4 year is a boit of time.