Can't get Windows to boot from GRUB

I recently installed Ubuntu 13.10 and am having some issues getting GRUB to work with me. Whenever I want to get to GRUB (to boot Ubuntu), I have to manually select it:
. Then I can select Ubuntu from there. However, I want to make GRUB the default bootloader for my machine so it doesn't autoboot into Windows if I forget to press esc on boot. My GRUB screen looks like this: . When I select Windows, I get this screen: . If someone could help me figure out how to make grub my default bootloader and how to boot into windows from GRUB, I would love it! Thanks :D