This is the old post may be not relevant again for the time.
In Microsoft windows, when you will log on to your computer, one of the way is you have to press ctrl + alt + del.
If you want to bypass this way to login or eliminate this requirement for the logon process faster, here is the easiest way.
The tool is for disappearing / bypassing the ctrl alt del, can be downloaded from: http://www.ziddu.com/download/16148969/MicrosoftFixit50406.zip.html
work with windows XP, Vista and Windows 7
If you want to restore back ( logon with using Control Alt Del again )
here is the tool from this link: http://www.ziddu.com/download/16149044/MicrosoftFixit50405.zip.html