Check out this great landing page all about the SEO toolkit for IIS. http://www.microsoft.com/web/spotlight/seo/?appid=10990002
This is an amazingly useful tool for analyzing your website and recommending changes. It was developed as a tool that integrates with the IIS control panel, but many people make the assumption that it can only be used to analyze websites built on IIS. In fact, it can analyze ANY website you want. It just needs IIS to run on your computer. Which means it works on Windows XP, Windows Vista and Windows 7.
Another thing people people assume is that the optimizations it suggests are only good for Bing. Actually, the optimizations are pretty universal and apply to Google and Yahoo as well.
It installs in seconds via the Web Platform Installer. There’s a great overview video on the landing page that illustrates how it works.