So I decided to instlal Rails. I needed to install from source since 
RHEL included 1.8.1. I did this, installed from source, then gems, then 
rails, all after uninstalling the ruby RPM for RHEL. Yet binaries still 
remain in the path RHEL used (/usr/bin/rails, /usr/bin/ruby, etc.). Is 
there any way to clean this up? The new stuff is in /usr/local/bin.

Preston