FC4: grub no longer allows windows booting

[Noah]

Anybody on this mail list help me?

okay I went through all the instructions to get a dual boot system fedora and
windows XP. 

http://shawndisk.com/modules/xoopsf...php?cat_id=2#q7 

and now I am finding that the following error occurs from the grub loader when
I choose the windows XP option. what else can I try so I can boot up in
Windows XP?

I have two IDE/ATA Maxtor 300GB drives (6L300R0) and an Asus A7N8X motherboard.

--- snip ---

rootnoverify (hd0,0)
chainloader +1

GRUB Loading stage1.5


GRUB loading, please wait...
Error 18

--- snip ---