bootable USB Stick || Fedora 8

Hello Everybody
I am planning to install Fedora core 8 on an extra PC I have; what I wanna do is to boot from a USB stick then install Fedora from an ISO image I already have via FTP. Could any one tell me how to create bootable USB Stick for Fedora as I already found how to install from FTP server but I don't know how to create a Bootable USB Stick

Thanks in advance:)