I found a lot of value in your routed OpenVPN tutorial and was wondering if you are planning to post it back up. If not, feel free to email it to me. Thanks!
I think this may have been posted when the tutorials were down? In any case it's still around:
http://www.section6.net/wiki/index.php/Setting_up_Routed_OpenVPN_in_FreeBSD
Just make sure you have a decent powered machine for this one. I tried it on a soekris and was pretty disappointed with the results, though it worked ok otherwise.
It's still here