I would of assumed that there is some type of zoom, but she stated that it is as the screen cap pic is; zoomed when she took it. To try to show that she was doing that to try to correct it.
But there may be a text setting within vista that is doing this. depends on desktop settings I do believe, something maybe inherent if there is a special font being used for the desktop settings, or for the dpi of the font?. maybe i am wrong, I myself don't use vista nor 7 as a day to day work setting nor at home on my PC for regular use.