Project Management Methodology for IT Operations?

sleeperservice asks: "There are a multitude of books, tools, and educational programs that deal with managing development projects. Whether you subscribe to IBM's Rational Unified Process or maybe SEI's Capability Maturity Model, whether you read Tom DeMarco's Peopleware or possibly Brooks' Mythical Man Month, there's something out there for you. However, most of these deal with projects that have a heavy amount of development, often new development associated with them. What about the folks in Operations? Let's say you need to upgrade your Oracle-based data management system for 1000 non-technical users? Or maybe you need to migrate your enterprise off of Outlook/Exchange and onto an alternative? What pointers are out there that Slashdot readers have used in such situations?"