GRRRR

I tried installing on a WinXP machine dual boot. Worked on it for hours, got everything working nicely, sound, DVDs, etc. Then, when I needed to restart, it hung "no operating system". OK, no panic, put in the SUSE disk (yes, I purchased it from Novell), went through the various menus, reinstalled the boot loader, etc. Nothing.
I had a WinXP boot CD and I put that in, it boots fine, just the way it did before - except that the boot sector is gone. I tried using the WinXP disk console, fixbr, but that also didn't work. Tried using a Win98SE disk, fdisk/mbr, also no good. So, my machine now is limping along on WinXP with a boot disk.
Obviously GRUB destroyed the boot sector. Not the first time either. I guess I'm a glutten for punishment.
How do I restore the mbr on a WinXP (SP3) machine. By the way, when I restarted in OpenSuse, I KDE did not start - no GUI.
Frustrating.
Thanks
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