Help - Can't get FC5 to boot on new installation

I got a new computer and installed FC5 on the second SATA disk drive. 
 The install went fine.  I told it to install grub on the first disk, 
sda, MBR.  It said that it installed it but it doesn't start.  It 
just starts the WinXP on the first drive.  Below is the grub.conf 
file.  Any ideas why grub doesn't work?  How do I install it after 
the fact?

Thanks,

knute...

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to 
this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd1,0)
#          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
#          initrd /initrd-version.img
#boot=/dev/sda
default=1
timeout=5
splashimage=(hd1,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora Core (2.6.15-1.2054_FC5smp)
	root (hd1,0)
	kernel /vmlinuz-2.6.15-1.2054_FC5smp ro 
root=/dev/VolGroup00/LogVol00 rhgb quiet
	initrd /initrd-2.6.15-1.2054_FC5smp.img
title Windows XP PRO
	rootnoverify (hd0,1)
	chainloader +1
-- 
Knute Johnson
Molon Labe...