Looking for experienced Visual C++ Coder to modify ID's Quake 3 MAP/BSP Compiler or make our client able to render bsp maps

Looking for experienced and cheap Visual C++ Coder to modify ID's Quake 3 (or write a) MAP/BSP Compiler accompanying changes to file structure and rendering procedures. We would like someone to help us in creating a BSP compiler that will output BSP to work on our client which has modified face rendering structures. Clients BSP file structure, loading, rendering and anything else that may be useful will be included. Or adjusting our client to be able to render both modified bsp maps and original bsp maps Summary: Determine the difference between 2 different BSP file structures. Modify the compiler to output the required changes so that our client may load it correctly. Or modify the client so it can also load original Quake BSP maps. You should have knowledge in C++ and the BSP file structure and rendering.