Emsa WinStartup Manager 

Emsa WinStartUp Manager is a tool that helps controlling programs that startup with your Windows. You can enable or disable any program that automatically runs at window startup, both through system registry settings or folders. Freeware.
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KeyboardLocker 

Disables the keyboard, leaving the mouse active. An exit phrase must be entered before the keyboard is reactivated. Can be used to secure dedicated servers, or to show a DVD to a small child without them destroying your computer!
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avast! Virus Cleaner 

avast! Virus Cleaner is a free tool that will completely remove selected viruses & worms from PC: Badtrans, Beagle, Blaster, BugBear, Ganda, Klez, MiMail, MyDoom, Nachi, NetSky, Nimda, Opas, Scold, Sircam, Sober, Sobig, Swen, Yaha, incl. variants.
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OnStart Pro 

OnStart Pro is a multi-user startup manager for Windows 2000/XP/2003 that allows you to control startup sets of every user on your computer.
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