Dual Boot Xp and fedora

Usually the easiest way to create a dual-boot machine is to install Windows first, then GNU/Linux. Most distributions of GNU/Linux will detect the Windows partition and automatically add it to the boot loader; however Windows doesn't like to take a second glance at non-Windows partitions.

You could boot into GNU/Linux and install grub or lilo to the MBR, or you can force the Windows boot loader to read the GNU/Linux partition by copying a file from the GNU/Linux partition to the Windows partition and telling Windows to look for another partition. I don't remember the exact process for this as I haven't dual-booted Windows this way in may years, but you should be able to search Google for it online. If the FC8 discs won't let you install only the boot loader, you will either have to reinstall FC8 completely or use a different distribution with which to boot.