Can't seem to reinstall Ubuntu

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http://askubuntu.com – I have xp on 1 drive and on a separate drive I had ubuntu installed on a partition. Something went wrong and I backed up and tried to reinstall Ubuntu 12.04. I have tried to reinstall from a live CD several times several times but I guess I'm not doing it right. When I boot Grub comes up and if I chose xp I can boot normally, If I chose ubuntu I only get to a command prompt. I thought it was a problem with Grub so I booted into the live cd and installed Boot repair. I used boot repair a couple of different ways and it never worked. Here is the output file it generated if it would help: http: (HowTos)