Nope. Facebook wants a clear separation between comments on your site vs their FB Pages. Facebook's biggest fear, and thing they try to combat heavily, is 'tricking' users in any way. They give little/no flexibility in how the Like button looks or acts, to make sure it's always the same for everyone and can't be (easily) gamed. So, comments on your site for your FB Page could be confusing, and could lead to comments about the current page from your site posting to your Page, where it may or may not make any sense without context. That's why they don't provide the tools to do it easily.
With all that said, I believe there are ways to post to the wall from your site, but it's not using any of the easy widgets to do so.. it would take a lot of programming, and setup to get done, and just something we don't support. Just mentioning that so, in case you see something similar somewhere (we haven't actually), you don't think I'm blowing you off.
As always, questions or other feedback welcome. We always love hearing how people are (or want) to use JFBConnect. It helps us to always make improvements for future releases.
Good luck,
Alex