SEO for Interspire Relic

[G2W]

Hi All,

Does anyone know of optimization best practices for the now largely defunct Interspire Web Publisher?

Specifically, I'm looking for a canonical plugin or workaround to try and get rid of a few duplicate content issues (most importantly root vs. index.php).

I'd like to just redo the site with a cms that has better support...unfortunately client budget constraints are a little tight at the moment.

Thanks!