deleting operating system

[Kevin Dubner]

I recently had problems logging into windows on my pc and
had to reinstall XP. When I reinstalled, I put XP in a
new directory so I wouldn't lose my old data. Now when I
boot up, my computer asks me which operating system I
want to use, showing my old XP and new XP as the
choices. How can I remove my old XP so the computer
defaults into my new XP on boot up?

Thanks,

Kevin Dubner