Problems playing some games

I'm running a windows XP professional service pack 3 on my WM player

So as i can play warcraft 1 and 2, star craft 1 with no color issues, and all those other old fashioned awesome games :3

My problem is, when i play them, no matter what settings i can find to alter, it always plays in this little 4 inch by 4 inch screen, no matter how big my guestw indow is

I would like to play the games with full sceen seeing as how its very hard on my poor eyesight

Can anyone help me?