Thanks for all the suggestions.  I have another dumb question - can I
just take an earlier version of sed - say on RedHat 5.2 or 4.1 and just
copy the sed executable onto a floppy and then transfer and use that
version on RedHat 7.0?  - or does sed use some of the libraries that had
been on 5.2/4.1 - and thus won't work on RH 7.0?

-Or even another possibility, can I use the SCO sed binary and run it on
RedHat 7.0 with ibcs?  I've tried to get ibcs running without any
success at all:

a)  rpm -qa | grep ibcs shows:

kernel-ibcs-2.2.16-22

[root@rh70 /tmp]# lsmod
Module                  Size  Used by
epca                   38316  16
lockd                  31176   1  (autoclean)
sunrpc                 52964   1  (autoclean) [lockd]
tlan                   20200   1  (autoclean)
st                     25164   0  (unused)
ncr53c8xx              52356   0
cpqarray               15368   5
[root@rh70 /tmp]#

b) I have copied all of the SCO binaries from /shlib to the RefHat
7.0 /shlib

c) When I try to run the classic "Hello World" program that I
compiled on SCO on RedHat 7.0 - it gives the following message - as does
EVERY SCO program I run::

[root@rh70 /tmp]# ./a.out
bash: ./a.out: cannot execute binary file

Has anyone ever gotten ibcs to run any SCO programs on RedHat?

TIA...