That is a tough program, without knowing more details about what exactly you need. I agree with Paul on the hammer beam - but I'll leave my comments out of it, as they are generally uncharitable to modern interpretations of that design. (I have full respect and often awe for historic examples though...)
There are quite a few folks who post here that are designers / engineers.
And Paul mentions the TFBC as a great resource to find someone from the engineering council (their direct web address is:
http://timberframeengineeringcouncil.org/index.html
