How to edit File extensions

This might not be the biggest secret out there, but it might be new for some users. As you may already know, by default Windows XP doesn't show the extensions of a file. Some users don't know that and keep wondering how they could change the extensions when it's not even visible. In my last post, I talked about 7z extension, if you didn't turn on the extensions visibility, all you'd see is a winrar icon if you have it installed of course. It showed in Winrar because that's your default compress software and the file is compressed. But that doesn't mean that it's .rar file and you'd never know that if you can't see the extension of it. I'm not sure why Microsoft would want to hide the extensions by default, even though it says it was for security reason, but I think most users are clever enough to know what they are doing. Maybe Microsoft should disable the delete button so we couldn't accidentally delete any files? That's what happened with Windows Vista, Microsoft think they are only the clever one. Every action you do in Vista is pampered by the UAC, and keep asking you if you are sure what you want to do. That's why the most searches word for Vista are "how to disable UAC".

Anyway, I'm off topic again. So to enable the extensions, goto my computer, on the top menu select tools and folder option. A new windows will pop up, select view tab. On the second bracket, scroll down a little and you'll see "hide extensions for known file types". Untick the box and click apply. Now go back to your deskyop and you should be able to see the extensions. To change it, just click on the icon once, then you'll be able to change the file name or extension as you like.