Windows 7 have a nifty feature which combines the windows of opened applications under the same taskbar button. If you don't like it you can always turn it off.
You have more people using one computer and you don't want them to be able to shut it down using a shutdown button on Windows logon screen, this is how you remove it.
If you leave your computer running on a 24/7 basis you might be interested in determining the amount of uptime that has accumulated since the last reboot.
SQL is a standardized query language for requesting information from a database. You can verify your knowledge by trying to answer a few simple questions.
After a while I decided to make a new tutorial for all you awesome Gimp users out there. This time we are going to turn on the Xenon headlights on a random car. Enjoy!