Dustin,
XP's Product Activation system allows you to change installed hardware over a period of time, but a lot of sudden changes will cause you to have to reactivate.
The message about having activated too many times is encountered most often by computer enthusiasts who do a lot of tinkering with the installed hardware on the computer.
Please rerun the Activation Wizard, but this time choose Activate by Telephone. If the Telephonic Activation system also says you have activated too many times, chooe the option to speak with a live telephone rep. The rep will ask some questions to make sure you are still using XP in accordance with the End User Licensing Agreement (EULA), and if so will give you an Activation code.