Divyesh, the visual qm manual is apparently in Italian only.

Quad4m is not the friendliest of softwares and extremely time consuming, although free of charge.

Do you really need a 2D site response analysis?

"Data speak for themselves" -Reverend Thomas Bayes 1702-1761
P(Ai|E)=(P(E|Ai)P(Ai))/P(E)