From what I've been reading, I haven't seen anyone publicly release a Sage addon yet. The Spring/Summer release should have all accounting software exports built right in.
That'd be perfect. I'm not afraid of coding it myself which I'd love to do but I've got more stuff to do than re-inventing the wheel so thought I'd better double-check first.
Just wanted to add this incase anyone is interested... bumping an old thread http://www.jjwdesign.com/seo_oscommerce_urls.html