lodaing boot loader in MBR

Hi,
A small query here
I had installed Win Xp on my first physical partition, and SuSe on Second partition
now i formated the Xp and the GRUB is vanished from MBR i want to rload it .
i tried it using Rescue System but still Show error msg.
“cannot load OS” on booting.
tried to install and using repair option i selected MBR field .
but not working …

plz do help.

Re-Install Grub Quickly with Parted Magic - openSUSE Forums