Norton Ghost 14 Disk Copy Causing dual boot

I recently purchased a 640 GB hard drive for my XP Pro Service Pack 3 machine.  I Disk Copied the 40 GB C:\ drive and that worked fine, but now when I boot the new 640 GB driveor the 40 GB drive I get the option to boot from XP Pro or XP/2003.  I don’t know what XP/2003 is, but it won’t boot from that anyway.  How do I remove the dual boot option so that it always go to XP Pro without prompting me and why did it affect my 40 GB drive the same way?