How to rebuild grub under Linux 21.2

Hi,
I am running Windows 7 and Linux 12.2 under dual boot.
My system was healthy until I restored the Windows partition using Paragon Hard Disk Manager.
Now, when I boot up I see a blank screen instead of the grub menu that was there before.
I knew how to rebuild grub under Linux 11, but have no clue about how to proceed under 12.2.
I booted my system using the rescue option and entered grub, but when I went to find /boot/menu.lst I was told that the file did not exist.
Any help here would be appreciated because I no longer have a functioning system.
Thanks in advance,
s660117

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