Minneapolis, Minnesota, April 27, 2006— Four51 Inc. (www.four51.com) today announced a major upgrade to its Commerce-Networks-on-Demand software system. According to Owen Schott, director of account management at Four51, “The improvements to the software will allow customers more control and security—two essential traits in the online world.” Primary application features include the use of credit card verification numbers, the ability to create tax rules by zip code, customizable approval processes, and greater capabilities to control the look and feel of the interface. Additionally, Four51 continues to invest in web services to extend our systems capabilities and interoperability with third party operations. Four51, in its ongoing effort to anticipate companies' needs to drive demand and growth, is confident its customers will find the system upgrade easy to use and easy to manage. Four51 believes that current technology is necessary to drive a growing and competitive company, and this upgrade will make it easier than ever to support a company's growth initiatives. Now, customers will have the flexibility to automate their own approval processes and rules. Joe Eckerle, Prepress Manager at Mackay Envelope Company, was impressed with the new approval process features, stating, “The new approval process is fantastic. It's critical we can provide our clients with a solution that allows them to ‘bounce' approvals from department to department, or from manager to manager, and then back to the supplier. It will certainly make things smoother that we will be able to write our own approval rules.” As Dave Baldwin at Quality Park summed up, “Now more than ever it's a complete package to sell to customers.” Upgraded capabilities will be put into effect this Thursday, April 27 at no additional charge to Four51 customers. As Schott explains, “We're making a good system better so that our customers can be better.”