Thanks spanners. For the general good, I went searching and on this Microsoft Web Page
http://www.microsoft.com/piracy/basi...ion/mpafaq.asp
found an article that included the following:
"
Will Product Activation allow me to upgrade my hardware?
Yes, Product Activation does allow users to upgrade their hardware. One of the forms of piracy that Product Activation guards against is hard disk imaging. Not all forms of hard disk imaging are illegal. However, by forcing the copied software to be reactivated, Product Activation will prevent a pirate from copying data from one PC's hard drive to another's to illegally run the software on two PCs. It does this by comparing the hardware on which it was activated to the hardware on which it is now being booted. If the hardware is substantially different, then reactivation is required. If it is the same or similar, then the software will continue to work. Users who upgrade their PC’s hardware substantially may be asked to reactivate. Reactivation is easy and can be completed by contacting Microsoft to obtain another confirmation ID.
What components of the PC are used to create the hardware hash?
For security reasons, Microsoft does not disclose the exact components or number of components used to create the hardware hash.
How many components of the PC must change before I am required to reactivate? Are the changes cumulative? In other words, if I change one component today and one tomorrow, is that two component changes?
Common changes to hardware such as upgrading a video card, adding a second hard disk drive, adding RAM or upgrading a CD-ROM device will not require the system to be reactivated. The changes are cumulative; however, if a user is asked to reactivate, the hardware profile is reset to that new configuration.
If I reformat my hard disk, is reactivation required?
If the hard disk is reformatted and the software is reinstalled, reactivation will be required. The same grace periods for activation apply in this situation. Reactivation on the same PC can be completed as many times as required. The activation can be completed via telephone or Internet."
So, reactivation would be required.