How to do crosstalk analysis?

hi to all,
i need to extract the cross talk coeeficient between two grounded coplanar waveguide. what is the procedure i need to follow. is there any analytical formulation for that. after finding the fields using fdtd simulation wat i hav to do for extracting the crosstalk cofficient.
and how i need to extract inductance and capacitance from the simulation results.

anticipating someones help.......
ramani