[CentOS] Graphical net install

Euhhh..

I guess you mean the pxe config file ?

That CAN be configured with boot options:

My file looks like (/tftpboot/pxelinux.cfg/default):

prompt 1
default co52
timeout 1000
display boot.msg

label co52
  kernel co52/vmlinuz
  append initrd=co52/initrd.img ramdisk_size=8192

label co52_g
  kernel co52/vmlinuz rhgb
  append initrd=co52/initrd.img ramdisk_size=8192 ip=dhcp ks=nfs:192.168.0.11:/data/exports/co52/ks.cfg lang=en_US keymap=us
-- 
Test <test at remedial-teacher.nl>