I installed GRUB to /dev/hda1

[David Sansome]

My computer has two hard drives, each with one partition.  hda1 has Windows
XP on it, hdb1 has Red Hat Linux 7.2.  I have installed GRUB to the primary
partition of my Windows drive (hda1) instead of the master boot record
(hda...I think), and now I can't boot into windows (GRUB just appears
again - it's booting itself).  Do you know of any way to restore my Windows
boot sector, or will I just have to reinstall Windows?

Thanks very much,
David Sansome :-)