Bulletin Board - Inside Existing Web Script

I am looking for a person to combine this existing script called TRSM and allow it to work with Simple Machines Forums Software. I would like the forum software to show up when a person clicks on Forum and show the external parts of the website basically inside the index area. Also I would like the same username and password when they sign into to the TRSM program it will also sign them into the SMF Boards as well. Basically one sign in for all aspects of the website. Please note that Budget for this project is limited. Thanks