Sean, there are quite few links without needing cco login that you could reference for site-to-site vpn configuration examples and information , please go to the bellow page and scroll down for site-to-site vpn examples Pix ASA, PIX routers etc..
http://www.cisco.com/en/US/products/ps6120/prod_configuration_examples_list.html
HTH - Please rate all helpful posts.
Jorge
Jorge Rodriguez