help with "grub rescue"

[uriah heep]

I had a triple boot setup with xp, win 7, and kubuntu 9.10 all on seperate
partitions. the win 7 partition became corrupt and while in xp i formatted
that partition in ntfs as I needed the space for work anyway.  upon reboot I
get a grub error then the line grub rescue. ls reveals the 3 partitions.
What do I do to get grub to give me the options of xp and 9.10?  I have
started reading up on grub but I am afraid I will screw up and I need the
data for work.
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