Things they DON'T tell you in the XP Home<<-[AFAIK] EULA
http://www.computergripes.com/WindowsXP.html
Here's a favorite gripe that I picked out of the lengthly list->>
" What they don't tell you about product activation
I recently spoke to a telephone representative -- a woman who authorizes the telephone activations for Office XP. She revealed the following information, which is not in any of Microsoft's FAQs, and is not included in the EULA:
They will authorize a maximum of three activations in the first 30 days that you own the product.
They will authorize a maximum of eight activations for a product.
If you reach the eight-activation limit, you will be required to purchase another license if you wish to continue using the product.
Note: Others have reported that they've been told that a total of eleven activations will be allowed. The numbers seem to vary, depending on whom you speak with."