Craig:
My whichfilesdoineed.html should not mention PG 7.0.3 at all.
Use only PG 7.1.x as listed, not PH 7.0.x from your RH install. I think you installed PG 7.0.3 from your Red Hat CDs. Undo that
rpm -e `rpm -qa |grep postgresql`
and then try installing per my document.