No. You can only install Windows Vista on an
internal hard drive. You need to setup an individual
account for the children's use. Or you can purchase
a second hard drive and install Windows Vista on
it, creating a dual-boot. This would require a second
Windows Vista license (full).

--
Carey Frisch
Microsoft MVP
Windows Desktop Experience -
Windows Vista Enthusiast

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"john454" <2015feb25******.com> wrote in message news:1639b55d-b1c7-42ab-b5a9-73a9fb38d093@s33g2000pri.googlegroups.com...
I bought a new pc for my work which has all the bells and whistles.
Of course the kids want access to the pc so that they can play the
latest games.

I prefer not to install any games on the pc. I have a couple of
licenses for both Vista Ultimate and XP Pro.

Is there any way to install either Vista or XP on a USB drive and
install their games on that. When they want to play, they can just
boot their drive off USB, making use of the hardware on my pc?