absorbing materials simulated in hfss

Hi everybody

I designed a 4 layer pcb with via at the centre,nw i want to analyse the effect of absorbing materials at the adges of the pcb,how it reduces reflection and all,im doing the simulation in hfss,can anybody please help me.

Also i want to analyse trace radiation,thats i have to reduce radaiatons from pcb trace,how its possible?

Is it possible to open a hfss file in hyperlynx????