IC5 includes library analogLib with all analog components (BJT, PMOS, NMOS, resistor, capacitor, voltage and current sources and so on). This library icludes symbols with properties for interfacing to model and simulator (creating netlist). For the beginning it is enough to design schematic. Later you can create your own library, but in this case I reccomend use unified symbols (like in analogLib) for new library. Otherwise you will have problem with schematic if you want to change library in your design.
You mentioned you don't have spectre model. What kind of model do you have (especially for transistors)?