How Can I Recover A Drive Partition Formatted By The Ubuntu Installer

I decided to go with Linux for awhile so I installed Ubuntu. It put it on the 200GB partition. It formatted that partition and installed Ubuntu. While I was installing the electricity went out and when I booted back up Windows XP said that “ntldr is missing.” So I re-installed Windows XP on the 50GB partition.

But now, since I’ve re-installed XP, I can’t view the 200GB hard drive partition formatted by the Ubuntu installer. How can I recover it?