Has anyone here used Superspice ?

I am looking for some information regarding setting up the Simulation
parameters to view Phase and Magnitude response for an oscillator
circuit (I have opened up the feedback path to enable a signal to be
injected through the amp and resonator.

I cannot find what I want in the documentation that came with the
software and the company has not replied to my email so I am hoping
someone else may be able to help.

Alternately if you know of a shareware or freeware simulator that could
I could use that has plenty of forum support ?

The exercise is to work through the book I have on computer simulation
"Oscillator Design and Computer Simulation" by Randall Rhea and see if I
can get the same results from the examples he gives (the version of his
book I have is the very first book sold and the software he used that
comes with the book is on an old disk I cannot read).

I have RFSIM99 but cannot see if I can get phase and magnitude
responses, I can get magnitude OK but want to have phase information
together with this to observe what the relationship is between them at
any given point.

Being "green" with regard to simulation, I do not want to purchase a
commercial simulator until I have some experience and am confident I
will be able to use it to obtain meaningful results.

Thanks in advance.