Perl interfacing to old and new backends.

I've got a server currently running postgresql 7.0.2 and I of course want to
use the latest and greatest production release (well 7.3.1 at least).

The thing being that this is one of those RAQ systems and they have alsorts of
wierd system admin things, mostly through a web interface, so I don't really
want to just replace the perl modules with ones linked against the new
postgresql. I'm also pretty certain that should I be silly enough to try and
install the modules from CPAN then they will trash the old versions.

Anyone got any hints as to how to run two sets of perl --> pgsql modules
without doing a completely new perl install in a different tree?

Alternatively, anyone know if a RAQ4 with a Linux 2.2 series kernel dated
November 2001 actually uses PostgreSQL for any of it's fancy management
tools? I've a suspicion that it doesn't but who knows with this setup.

--
Nigel J. Andrews