right click on desktop, but not on an icon
go to properties
select settings, move the slider on screen size or screen area all the way to the right. that will give you the maximum. if it doesn't go that high, then you need a new monitor
im assuming you need to 4-table. i had to buy a new one myself to fit 4 tables on there. spent $500 but well worth it. pays for itself if you know what i mean
gl