a quick summary of a couple different posts describing CD-free installation of FC3, in response to an earlier posting asking about this by me. (both solutions assume some form of red hat or FC on the system already, or at least a grub-controlled install.)
the first response referred to
http://www-2.cs.cmu.edu/~colohan/docs/fedora_upgrade.html
which describes how to recursively copy everything out of the FC3 "isolinux/" directory, copy that under /boot, add a new stanza to /etc/grub.conf and boot using that. and that seems to work nicely.
a second response was to copy the same files from under the "images/pxeboot/" directory and do pretty much the same thing. granted that PXE will undoubtedly offer more flexibility, if you're doing a simple NFS-based install, is there any reason not to use the first solution? just curious.
Using the files from the pxeboot directory just saves you the job of extracting the kernel and initrd from the ISO image. It's a simpler process, that's all.
Paul.