XP Smoker Pro 5.5 - Is the newer more powerful version of the Award winning tweaking utility designed specifically for Windows XP a.k.a WinXP. XP Smoker Pro allows you to change a multitude of settings in the registry. These settings can improve the performance of your computer drastically. XP Smoker Pro includes a State-Of-The-Art internet optimizer that runs a series of tests to optimize your internet connection for blazing fast surfing no matter what connection speed you have whether it be broadband or dialup. XP Smoker Pro Includes 94 extra security settings and tweaks to get your PC truly smokin!. Compatible with Windows XP Service Pack 3.
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There is software named as Digeus Registry Cleaner I recommend it when there are problems with operational system. I also recommend Tune Up Suite. It prevents computer problems.