Best Answer: How Do I Change a File Extension in Windows Xp?

Now rename any file, you will able to see the file extension starting with (dot) at the end of every file name. Change the file extension as per your need. When you change any file extension a Warning Dialog Box will appears. Click on yes and you are done.

How do I manually change a file extension?

You can also do it by right-clicking on the unopened file and clicking on the “Rename” option. Simply change the extension to whatever file format you want and your computer will do the conversion work for you.

How do I change what program opens a file in Windows XP?

Scroll through the list of file extensions till you find the extension that you wish to change the default program. When you find it, left-click on it once to select it and then click on the Change… button.