Have a look at this thread
for the post by harley51.
You'll need to re-install grub whilst in FC so it's on a Linux partition, rather than let it install to the MBR as you apparently did on the last install.
Then you can do as described and copy it over.
To resurrect your Windows system, boot from the XP CD, and select recovery centre, then do a FIXMBR - this will put the XP bootloader back, and you cann update boot.ini to include your linux system.