Are you talking about installing it without using a boot CD? The only downloads I see on the Fedora site are iso images, and those are meant to be burned to a disc to make a bootable stup CD that will install the whole system.
If you don't have a CD burner or bootable CD-ROM drive then you can try extracting the iso file and looking in the /boot directory for a floppy boot image. Once you boot from that floppy then you should have the option of installing from a local filesystem, and you can tell it where the extracted files are.