how to model the cable connecting power supply to my rf board

Hello!
I would like to know how to model the cable that connects the power supply to my rf board. There will be some inductance there and i would like to see if this will affect the circuit behavior. In my case the cable will be a twisted pair, but i would like to be able to model other cables as well.
Thanx in advance,
George

For RF, it would be better to model it as a transmission line, rather than in terms of R, L and C.