Difference between Standard and Professional edition of Microsoft Project 2007
Many of you will have to decide which version of MS Project 2007 tool to install. To help you out, I will write the main differences between MS Project versions.
Office Project Standard 2007 is the latest version of the desktop project management program. As a stand-alone product, Office Project Standard 2007 helps project managers, business managers, and planners to manage and plan projects independently with familiar, easy-to-use tools. Office Project Standard 2007 is not designed to exchange data with Office Project Server 2007.
Office Project Professional 2007 is the desktop client that is also used to connect with Office Project Server 2007 as part of the Office EPM Solution. Office Project Professional 2007 offers all the tools found in Office Project Standard 2007, and when used with Office Project Server 2007, it also provides powerful EPM capabilities such as collaboration, management of shared resources, portfolio management, and reporting across projects and programs run by different project managers.
In plain words: if you don't plan to use the Office Project Server 2007 functionality install the Standard edition, otherwise install the Professional edition.