Welcome!
I suggest you go to Yahoo and join the "Han In Carbonite builders club" in the Yahoo Groups. The files you are looking for were created by CKing who is also a member here, and they are available in the Yahoo Group. You'll find many people willing to help there.
Of course, there are always people here like Zenix and others who are happy to help as well. Be sure to use the search feature and find all of the threads showing progress and completed projects by the members here, there is a wealth of information here. Also, there are several highly accurate and detailed parts available here to help you with your build.
Good luck, and be sure to post pictures of your progress and the finished prop!