I found this typing tutor at http://snapfiles.com, I've never heard of it before, it has a nice sleek interface, there's also a portable version available.
Similar already listed is: TypeFaster Typing Tutor
Name: RapidTyping Portable
Homepage: http://www.rapidtyping.com/
Download: http://www.rapidtyping.com/downloads.html
Features: http://www.rapidtyping.com/features.html
Size: 1.20 MB (compressed) - 5.44 MB (uncompressed)
Category: Education - Computing
Synopsis: RapidTyping Typing Tutor can help you to learn touch typing through a series of lesson that include exercises to learn individual letters,numbers and symbols as well as a series of text exercises. A virtual keyboard is displayed below the text to be typed and help you with finding keys ans finger position without having to look at your keyboard. Other features include the ability to edit included lessons or to create your own, detailed progress statistics and support for multiple users. RapidTyping Typing Tutor supports QWERTY, QWERTZ, AZERTY, ABNT2, and Dvorak keyboard layouts. The program comes with a rather annoying fish tank animation background which can (and probably should) be turned off. (quote taken from Snapfiles)
Writes settings to: Application folder
How to extract: Download the ZIP package and extract to a folder of your choice. Launch RapidTyping.exe.
Stealth: ??
Unicode support: ??
License: Freeware
System Requirements: Win2000 / WinXP / Win2003 / WinVista