It is possible to mount an ISO-file like any other mountable volume (harddisk partition, for example: /dev/hda1):

mount /pathto/file.iso /mnt/mountpoint/ -o loop

(you need "block devices" / "loopback device support" compiled in your kernel, or as module)

This way you can get the RH9 full edition, without having to burn the ISO's to CD. You need a running linux-environment to mount the ISO's.

Maybe, another posibility is to install RH using the FTP-server as source for the install. (I know it exist for Suse, but I'm not sure if it is posible for RH) The procedure is fairly simple : create a bootdisk, reboot your PC with the bootdisk, configure your network card and select the FTP-server + path to the RH9(install)-files. The rest of the install is equal to installing from CD-ROM.
(Again, I'm not sure if this is possible with RH, you might consider trying SuSE instead).

Greets,

ruleant