With the original partitions for both OSs removed all you do now is use GParted if that's the "platform independent" release to see a new NTFS primary created for XP to go onto. If you don't have the live for cd 0.3.3.0 release the XP installer is also capable of creating a new one with that. But GParted simply insures there's no 1-8mb of unallocated drive space later seen in the Disk Management tool.
The live for cd iso image is about 15 down from the top of the download page at
http://sourceforge.net/project/showf...kage_id=173828
Especially if you installed from a live distro Grub was installed into the mbr seeing XP likely as the second OS. You simply boot up with the XP install cd to arrive at the recovery console once logging onto the Windows installation detected. At the command prompt seen simply type in "Fixboot" and "Fixmbr" to see the boot information rewritten. But since you deleted the exiting partitions the fresh install of XP will automatcally write the new entries needed in the mbr.