Issue with boot loaded

Hi All,

I have 2 systems (PC and Laptop) and in the systems I have installed Windows xp and fedora. Now I am trying to install Ubuntu on my laptop using bootable pen drive. But I need to change boot option in windows BIOS by pressing F8 while window is loading. After fedora installation grub2 will be the first boot loaded so I am not able to invoke BIOS setting by pressing F8. Can someone please help me resolving the issue?

Thanks,
Chetan