TweakGuides has released version 2.0 of its Tweaking Companion for Windows Vista. It’s an operating system optimization guide for both beginners and advanced users, and covers everything from installing the operating system to installing drivers correctly. It contains a long list of recommendations for the most significant settings and features, all the major performance and usability tweaks and customizations, as well as a detailed troubleshooting section. There’s also a similar guide for Windows XP.