Praveen,
1. You will need to install the OPC Core Components from this link: (free registration as a user will be required):
Downloads-->Redistributables-->OPC Core Components-->
OPC Core Components 3.00 Redistributable (x86) version 3.00.105.1
2. Here is the link to the MatrikonOPC DCOM configuration documents:
http://www.matrikonopc.com/dcom-configuration-opc.aspx
3. Configure your MII Destination as shown (including server, Port, MII version, and valid MII user / password with appropriate roles):
Regards, Steve