The scenario you describe requires 'two' copies of Vista - one for 'your'
room and one for the 'shared' room.
John Barnett MVP
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"Bobby" <firstname.lastname@example.org> wrote in message
> When Vista is released to the public, how many machines can I install it
> I would like to install it on two home PCs - one in "my" room and one is
> shared room. Is that OK or must I buy two copies?