The Microsoft Application Compatibility Toolkit (ACT) version 4.0 for Windows XP, including Service Pack 2, and Windows Server 2003 contains the tools and documentation you need to evaluate and mitigate application compatibility issues before deploying on these platforms. Tools include the latest versions of the Microsoft Application Analyzer that simplifies application inventory and compatibility reporting, the Internet Explorer Compatibility Evaluator that assists testers in locating compatibility issues with Internet Explorer on Windows XP Service Pack 2, and the Compatibility Administrator that provides access to the necessary compatibility fixes to support legacy applications in Windows.