GRUB hangs after RH9 install with dual boot config
I just installed RH9 on a system that had Windows XP. I put in a new IDE drive and installed RH9 on it. I created Linux partitions on /hdb, leaving /hda to Windows. For boot loader, I selected GRUB to be placed in MBR on /hda.
On reboot after the install, it displays GRUB and nothing else, it just hangs. Subsequent reboots get the same result. So now I can't get to either OS.
Booting with Windows CD and trying to repair it doesn't seem to work.
I suppose I could reinstall Windows, and I do have data backups, but I'd rather not reinstall everything. Is there any way to restore MBR so that it boots Windows?
Any info on this will be greatly appreciated.