I would update one system using apt4rpm or Red Carpet, then burn a CD with the downloaded files (/var/cache/apt or /var/cache/redcarpet) to a cd, then copy to the same location on new computer, install apt4rpm, run it and they should be up to date pretty quickly.
Red Carpet will do similarly.
# Redhat links
RedHat Linux Manuals
Maximum RPM
rpmfind
Easier software management:
apt4rpm -
Red Carpet
RedHat 8.0 Tips & Tricks
# Redhat 7.3 down configuration commands
setup leads to several configuration tools
# Redhat 7.3 up configuration commands
Configure soundcard:
redhat-config-soundcard
Configure X server:
redhat-config-xfree86
Configure network:
redhat-config-network