OK, so you need to add new Mass Storage drivers to your Windows XP sysprep image for your new HP 6470b laptop with the ""Intel(R) 7 Series/C216 Chipset Family SATA AHCI Controller", the previous model, the 6460b, having the "Intel(R) Mobile Express Chipset SATA AHCI Controller".
You download the "Intel Rapid Storage Technology Driver" SoftPaq from the HP website, run it on a temporary PC to extract the .sys and .inf files and notice that they no longer support the same storage chipsets as your previous set. Support for things like "Intel(R) ESB2 SATA AHCI Controller" seems to have been dropped. Do you care? Run this report to find out:
SELECT DISTINCT [Device ID]
WHERE (Service LIKE N'iastor') AND ([Device ID] LIKE N'pci%')
And it will give you a list of all active Intel SATA controllers in your database: