How do I change a file extension file on Vista?

I know that I am supposed to press the layout button in Windows Explorer just left from the organize button but when I open up the explorer there is no Layout button, what should I do and/or how am I supposed to be able to change a file extension, please help.



Thanks in advance.
How do I change a file extension file on Vista?
I think this is how:

1. Open a folder or open Windows Explorer

2. Click the Layout button (to the left of the Views button) as shown in the picture below

http://www.tech-recipes.com/rx/1269/vist鈥?/a>

3. Click Folder Options

4. Click the View tab

5. Uncheck Hide extensions for known file types

6. Click OK



Hope this helps! ;]