The conversion of the project was successful.

The new directory structure is as follows:

C:/Users/Behrooz/Desktop/SPICE Examples - Orcad New Version/Appendix B-PS.14
    Appendix B-PS.14.opj
    Appendix B-PS.14.dsn
    Appendix B-PS.14.dbk
C:/Users/Behrooz/Desktop/SPICE Examples - Orcad New Version/Appendix B-PS.14/Appendix B-PS.14-PSpiceFiles
    Example PS.14.1 Dynamic
    Example PS.14.1 ECL Gate
    Example PS.14.1 Static
