Fedora 16 how to install from VNC, without having trouble?

F16, isolinux.cfg, for working sample.

default vesamenu.c32
#prompt 1
timeout 600

display boot.msg

menu background splash.jpg
menu title Welcome to Fedora 16-Alpha!
menu color border 0 #ffffffff #00000000
menu color sel 7 #ffffffff #ff000000
menu color title 0 #ffffffff #00000000
menu color tabmsg 0 #ffffffff #00000000
menu color unsel 0 #ffffffff #00000000
menu color hotsel 0 #ff000000 #ffffffff
menu color hotkey 7 #ffffffff #ff000000
menu color scrollbar 0 #ffffffff #00000000

label linux
  menu label ^Install a new system or upgrade an existing system
  menu default
  kernel vmlinuz
  append initrd=initrd.img quiet ksdevice=em1 ip=192.168.1.125 netmask=255.255.255.0 gateway=192.168.1.1 vnc keymap=us lang=en_US.UTF-8 selinux=0
label vesa
  menu label Install system with ^basic video driver
  kernel vmlinuz
  append initrd=initrd.img xdriver=vesa nomodeset quiet
label rescue
  menu label ^Rescue installed system
  kernel vmlinuz
  append initrd=initrd.img rescue quiet
label local
  menu label Boot from ^local drive
  localboot 0xffff
label memtest86
  menu label ^Memory test
  kernel memtest
  append -

Reference: 
http://fedoraproject.org/wiki/Anaconda_Boot_Options
http://docs.fedoraproject.org/en-US/Fedora/15/html/Installation_Guide/ch-Boot-x86.html#s2-x86-starting-bootopts
http://be.mirror.eurid.eu/fedora/linux/releases/test/16-Alpha/Fedora/i386/iso/
http://www.redhat.com/archives/kickstart-list/2011-February/msg00041.html
http://www.centos.org/docs/5/html/5.2/Installation_Guide/s1-kickstart2-startinginstall.html