For what purpose??? If you need to simulate a part, it'll need a model file.. If its just for a schematic its very easy... Your first task is to visit the Labcenter forum to see if anyone has made one. You have to join to see the user models..
Ok.... What are you trying to make.... What part? I'll have a look on the forum for you.... If the part is too complex to model, I wont be able to help...