about grub embedded data

[dhj]

Hi,
   I try to write grub installer on windows 2000, now i have a problem.
   I write my own fat32 function to read block list of grub stage2,and save it 
to
the first sector of stage2.I use Ultraedit to check it,it's right.
   Other embedded data is :
    stage1:[0x40]=0x80;[0x4d]=0x80;[0x41]=1;[0x44]=stage2FirstSector
    stage2:[0x11]=1;[0x8]=0xFF;

   Then i use ntloader load stage1 by modify boot.ini,but it doesn't work.It 
says
"Windows 2000 could not start because the following file is missing or corrupt:
<windows 2000 root>\system32\ntoskrnl.exe.
Please re-install a copy of the above file."
   What is wrong with it?