Possible to extend permalinks?

Hi there,

I keep coming back to this problem… is there a way to have additional parameters get used for permalinks?

I’m working on a bilingual plugin, and this is my main problem now. I’d like to be able to write ‘blog.com/about/pagename/en/’ and have it point to ‘blog.com?page_id=12&lang=en’, but for the life of me, I can’t figure out how to do it. I tried working off of Morgan Doocy’s Multilingual plugin a while ago, and that didn’t seem to help. Jamie Talbot’s ‘Gengo’ plugin looks like it might do the trick, but only the demo’s available, not the plugin.

Ideas, anyone?

Thanks!! 🙂

-Jeremy