Looking for 3D FDTD C codes

hi all ...

i am trying to execute 3D FDTD C codes in
1. Free space
2. for any conducting and dielectric medium with Absorbing Boundary conditions
3.searching for any useful application of FDTD technique

already i have sullivanan books which has C codes for FDTD codes but it has so many error in it ,, so i need the Error free codes or C programs for FDTD..


one more thing whether FDTD technique can be implemented in genereal EM wave equation? is it possible ?


plz help me
with regards
sureshuzee