http://www.boson.com/Product/CIS-NS-CCNP-02.html you can download bosonnetsim7.0 from the page.
install it and locate in the directory:C:\Documents and Settings\All Users\Application Data\Boson Software\Boson NetSim for CCNP 7.0,instead of mscon43demo.dll with crack file in my inclosure.
    Now,you can use demo version but all functions of active full version.