it doesn't at all!
have you changed the DPI siza?
right click on the screen, properties, settings, advanced, under DISPLAY, DPI Settings
edit that. I run my laptop at 1600*1200 and have the fonts at 150% size which makes the text fine.
Also, in internet explorer, pressing control and scrolling on your mouse scroller button changes the font size (alternatively go to VIEW, TEXT SIZE)
Finally on the desktop, right click, properties, appearance, effects, click on LARGE ICONS.
All of these are WIN xp but should make your screen usable.