How do I make GRUB appear at startup without holding shift?

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http://askubuntu.com – I have a dual boot Windows 7 and Ubuntu. Whenever I start my computer it will go straight into linux unless I hold shift to go into GRUB. I am constantly having to change between operating systems and my keyboad configuration doesn't allow for my to press shift at startup. Is there a way I can make it go to GRUB even if the shift key isn't pressed? Thank you! (HowTos)