booting windows over linux

i have mandrake linux installed on my computer. everytime i turn on the computer, i get a blue screen where i can select linux or windows(or other stuff). the problem is i only have 8 seconds to make a selection or else some sort of log screen comes on. How can i make it automatically log onto windows if i don't make a selection (if it is possible)?

Look into /boot/grub/menu.lst