generate stochastic,crosstalk noise in cadence

hello,

I want to add a stochastic noise to vsource, such as gauss noise. i note that there is a "noise file" field in properies of vsource.

(1) Could I use this "noise file" to add a stochastic noise. how to write this " noise file"

(2) Is there any other methods adding stochastic noise to a input signals of circuits in ADE+SPECTRE

in addition to, how could generate crosstalk noise.

thanks in advance