An exemplary embodiment of the invention relates to a method and system for performing parts requirement planning activities across an extended supply chain. The method comprises loading a bill of material file into a computer network, processing the bill of material file, generating a bid request from the bill of material file, and transmitting the bid request to a web site. The method further includes receiving at least one bid response from a supplier, analyzing the bid response, generating an award notice, and transmitting the award notice to the supplier. The method also includes tracking selected activities in a log. Processing the bill of material file includes incorporating marketing cost analysis data into the computer network.