It might be scaling down the resolution, but you are still going to see a 800x600 windows screen rather than a 640x480. That mean's everything will be smaller just as it is when you bump up the res on a monitor.
Open your display settings, change the res to 640x480 then go browse the web for half a hour. Now into 800x600 and do the same.
Come back to me once you've been converted