Koroush Ghazi at Tweak Guides has finished creating his Tweaking Companion for Windows Vista.  The free version is available for download, along with the older XP guide.  If you find it helpful, you can support him by purchasing the Deluxe version.  Whichever route you choose, check out the tips before you stop running Vista.
“After almost two solid months of researching and experimenting with Windows Vista, I’ve finally been able to complete the TweakGuides Tweaking Companion for Windows Vista. The guide is designed for novice and advanced users alike, containing 250 pages of objective descriptions, recommendations and tweaks for every aspect of Windows Vista. It is all laid out in plain English, and while it may take you a few days to work through, I promise you that at the end of it you will not only have a better system, you will also have a better understanding of Vista.”

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