We posted the slides and the demo code from Tony Goodhew's XPSP2 talk on Monday. You can download them here:
Windows XP Service Pack 2 Code Demos
With Windows XP Service Pack 2 (SP2), Microsoft is introducing a set of security technologies that will help improve Windows XP-based computers' ability to withstand malicious attacks from viruses and worms. To developers these technologies will have impacts on the applications that they create and the tools they use. This download contains code samples and a PowerPoint deck dealing with these impacts. This information was originally presented by Microsoft Product Manager Tony Goodhew in an MSDN Webcast.