Conditional installing of files from RPM based on REDHAT version.

[Jeff Parker <JEFFREY.H.PARKER@xxxxxxxx>]

I need to install files from an RPM based on the version of Redhat Linux 
running on that machine.  How can I best determine the version (Kernel?) 
and install or NOT install a file based on that version.  My situation 
is that my RPM may be installed on RH 7.3 or Enterprise 3.0 or 4.0.  If 
it's Enterprise 3.0, I have a special library I need installed but that 
library will cause the installation to fail on RH7.3 due to a failed 
dependency of this library on other Entreprise libraries NOT found on 
RH7.3.  I don't want to make separate RPMs for each RH version.  I also 
don't want to use '--nodeps' because that would be global for all files 
being installed.