1. Prepare a Schematic in orcad capture
2. Fill in the package used for each part with the package available in the library of the orcad Layout
3. Prepare the Netlist in Orcad Format
4. Load this netlist in Orcad Layout, you should get all teh parts on the screen, may be all cluttered.
5.Deside the pcb area and place each component. the connections will be shown by the software.