Microsoft has released some guides for IT / IS teams. I'm posting this in the Server OS section since a lot of this has to do with Group Policies that can be deployed through Active Directory. [QUOTE]Application Compatibility Testing and Mitigation Guide for Windows XP Service Pack 2: Microsoft® Windows® XP Service Pack 2 (SP2) introduces a set of security technologies that improve the ability of Windows XP systems to withstand malicious attacks, and provides the IT administrator with system wide security configuration capabilities. This guidance discusses the security technologies, an application testing process, incompatibility symptoms, mitigation techniques, and deployment scenarios. It makes no assumption about the size or complexity of the network, and is as relevant to peer-to-peer environments as it is to Active Directory environments. Windows XP Security Guide: This guide includes settings for Windows XP clients deployed in a Microsoft Windows 2000 or Windows Server 2003 Active Directory domain. The document also includes guidance for an environment requiring an extremely high level of security in which application compatibility or usability may be constrained. Finally, this guide discusses procedures for implementing Windows XP security settings in stand-alone clients.[/QUOTE][img]http://www.binarydreams.us/images/newslogos/software.gif[/img][url="http://www.microsoft.com/downloads/details.aspx?FamilyID=9300becf-2dee-4772-add9-ad0eaf89c4a7&DisplayLang=en"]Application Compatibility Guide for Windows XP SP 2[/url] [img]http://www.binarydreams.us/images/newslogos/software.gif[/img][url="http://www.microsoft.com/downloads/details.aspx?FamilyID=2d3e25bc-f434-4cc6-a5a7-09a8a229f118&DisplayLang=en"]Windows XP Security Guide[/url]