Narayanan,
The ACI Simulator software on www.cisco.com is for the ACI Simulator Appliance (not for a VM).
You should be able to use the following to help with installation:
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/simulator/install/b_APIC_Simulator_Installation_Guide.html
Cheers!
T.