WARNING: Office Activation May Cause Unintentional Data Loss!
I recently moved my hard drive from one system to another identically configured system and was forced to re-activate several software packages. No big deal really, since Microsoft has made their activation process quite easy.
Links:
[1] http://www.techniquemicro.com/content/microsoft-ate-my-homework
[2] http://www.techniquemicro.com/tag/activation
[3] http://www.techniquemicro.com/tag/microsoft
[4] http://www.techniquemicro.com/tag/office
[5] http://www.techniquemicro.com/software