Hi,
If the system was preinstalled and you have a recovery disk, you should
follow the manufacturers' instructions. If this is a generice WinXP CD, boot
the system with it and enter setup. At the installation location screen,
choose to delete the existing system partition, then create a new one from
the free space. Format it and proceed with the installation.
In either case, make sure you have your Product Key handy before you begin,
as you may not be able to retrieve it from the registry later.
--
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP
Associate Expert - WindowsXP Expert Zone
Windows help -
www.rickrogers.org