Webmethods 8.0 two way SSL

Hi all

I have to set up two way SSL for HTTP calls to a partner. According to this link: http://tech.forums.softwareag.com/techjforum/posts/list/37455.page#126817 it can be done using “Certificates” section. Is it possible to have more detailed explanations about proceeding that way and also about how to set it properly programmatically(ie using IS services such as setKeyAndChain)?