Windows 7 busted after Ubuntu 12.10 LVM installation

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http://askubuntu.com – I'm lost. With the new option in Ubuntu 12.10: "Use LVM with the new Ubuntu installation" I have not thought that my Windows partition would be getting lost. I did it in the trust that Ubuntu would have warned me. Now it seems like all my files on the disk were deleted. As you must understand, I am totally new in LVM, just thought it is worth a try. I already tried boot-rescue, there is no MBR to fix anymore. After reinstalling GRUB, no Windows is selectable. I also tried gparted, after I wondered that I couldn't mount the Win partition, but there is no Win partition anymore. Only a boot blo (HowTos)