Is there anything wrong with just uninstalling the software after she
leaves? Politically, it would be a whole lot easier. Make a System Restore
point or get one of those external USB hard drives and make an image backup
of the whole system, just in case. Get the old Windows XP PC out of the
closet, and hide the new one. You can give the sister-in-law a non-admin
account, but there's going to be trouble if you do that, when she can't
install her software.
Personally, I would have told her to bring her own laptop, made her sleep in
the (unheated) shed, and turned the wireless router on and off at random
"James Egan" <firstname.lastname@example.org> wrote in message
> My sister-in-law will be staying with us, and she uses my wife's PC
> running Vista home premium SP1. The last time she stayed with us she
> installed a bunch of software on her old Windows XP PC. We want to
> prevent her from installing software on this new PC. Does Vista have any
> mechanism which would allow us to prevent software from being installed?
> I'm thinking at minimum of creating a non-admin account for her to use.
> And no, asking her to NOT install software will not work with this woman!