DiscoMoose

If you want to control your mouse pointer with the keyboard, Windows XP provides a way:
Press Alt+Left Shift+Num Lock all at once and a prompt will appear telling you that you have activated mousekeys, select ok then you can control the mouse with the numpad.
The controls are: 1,2,3,4,6,7,8,9 = move the mouse5 = mouse button […]

You can use google to find definitions of words rather than looking them up in an online dictionary. To do this, search for "define:" followed by the word (without quotes) you want to find the meaning of. For example: "define:potato".

To view all the currently running processes in windows from the command line, you can use the command ‘tasklist’. The output will look something like this:
F:\>tasklist
Image Name PID Session Name Session# Mem Usage
===================== ====== […]

To terminate a process from the command line of windows, use the taskkill command:
When you know the name of the image to stop:
taskkill /IM notepad.exe
Or when you know the process ID, eg 784:
taskkill /PID 784
For more usage variants, type taskkill /?
NB: some of this information about what processes are running can be obtained by the […]

Google lets you narrow your search down to within a specific website, or to within a specific TLD (for example .gov).
You can do this by using the site: command in your search, for example:

java site:sun.com - searches for java on sites with the domain name sun.com (this includes subdomains, like java.sun.com)
java site:java.sun.com - more specific; […]

Google has a currency conversion feature built in to its search, all you have to do is search for 100 GBP in USD, for example, to convert £100 (UK Pounds Sterling) to US Dollars. If you don’t know the acronym for the currency you’re converting to then don’t worry as you can also do conversions […]

I’m not sure how long this has been there (a while now; I’m imporing this from an old blog of mine), but Google has added a filter on its Advanced Search page which allows you to filter search results by the license that content on a website is released under, which would be useful, for […]

What I’ve always found useful since I started using Windows is to add notepad to the “Send To” menu, which is available when you right click on any file in Windows. This means that if you come across a text file with an extension which is not associated with Notepad then you can open it […]