Working with files when you can not tell what the file extension can be a huge pain in the neck, but there is a way out.
In any folder that contains files, click on the Tools menu and select Folder Options, then click on the View tab. Locate where it lists Hide extensions for known file types and uncheck it. Click OK.
Also How to say Bye-bye to the Search Doggy
To remove the dog that appears in the Search window open the Search window (Start > Search), select Change Preferences in the left-hand pane, and select the animated screen character option to remove it. Bye-bye Search Doggy!
Make your Volume Control Smaller
Volume control too big? Open the volume control window and press Ctrl+S for a smaller one. Now every time that you open volume control, the smaller controls will be visible.