Hello and Welcome to TSF
Your product key should be on the outside of the case. Have you tried a Repair install instead of using the Recovery Console?
Set the computer to boot from cd first in the BIOS
Place the xp cd in cdrom and reboot
Boot from the xp cd and choose install
Ignore the first repair option and continue with install
When windows finds the previous installation and offers to repair
then do the repair
If you have xp sp2 installed it needs to be incorporated into your xp disk or it will not offer the repair option only the clean install
How to perform a Repair Installation of Windows XP
Also have you looked over these
http://support.microsoft.com/default...;en-us;Q314063
http://www.microsoft.com/resources/d...d_stp_hwpg.asp