RF_Man,

   If it is a standard model. Use a symbol from analogLib in the
schematic, for example, analogLib mos4. Enter your model name
as the model name. Then in the simulator options include the
your file.

                                                        Sheldon

RF-man,

  By a standard model, I meant a model supported by the simulator.
If the simulator supports the model, then you need to define the model
and the path to the model parameters. If the simulator does not
support the model, then you will need to create/define the model,
as well as, define the name and the path to the model parameters.

                                                                   Sheldon