how to pre-modify boot.ini in xp setup?

[EB1000]

Hello

I hope I can find an answer here. I want to create XP setup cd that by default will cause xp boot to use grub4dos as bootloader. So I know I can rename ntldr to ntldrxp and rename grldr to ntldr and put it inside i386 to be copied by xp setup. The problem is I also need to modify the boot.ini file. But when I look for it inside i386 setup I cannot find it. I guess that XP setup generates it during initial setup. So my question is is there a way to modify the boot.ini file generation? I want it to include the following lines by default:

title Microsoft Windows XP SP2 Pro (Find and Load)

find --set-root /ntldrxp

chainloader /ntldrxp

Thanks